diff --git a/src/layouts/MainLayout.module.css b/src/layouts/MainLayout.module.css
index 15caf06..faf2439 100644
--- a/src/layouts/MainLayout.module.css
+++ b/src/layouts/MainLayout.module.css
@@ -108,8 +108,10 @@
   min-width: 0;
   display: flex;
   flex-direction: column;
-  overflow-x: hidden;
+  /* Allow horizontal scroll when inner content has a true minimum width; hiding X clips dashboard/store grids on narrow viewports */
+  overflow-x: auto;
   overflow-y: auto;
+  -webkit-overflow-scrolling: touch;
 }
 
 .mobileTopBar {
diff --git a/src/pages/Dashboard.module.css b/src/pages/Dashboard.module.css
index f5dc49a..fa96d0c 100644
--- a/src/pages/Dashboard.module.css
+++ b/src/pages/Dashboard.module.css
@@ -3,9 +3,12 @@
  */
 
 .dashboard {
-  padding: 2rem;
+  box-sizing: border-box;
+  width: 100%;
   max-width: 1200px;
   margin: 0 auto;
+  padding: 2rem;
+  min-width: 0;
 }
 
 /* Header */
@@ -50,10 +53,10 @@
   color: var(--text-primary, #1a1a1a);
 }
 
-/* Instance Grid */
+/* Instance Grid — min(100%, Npx) keeps one fluid column on narrow viewports (no horizontal clip) */
 .instanceGrid {
   display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
+  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
   gap: 1rem;
 }
 
@@ -63,6 +66,7 @@
   align-items: center;
   gap: 1rem;
   padding: 1.25rem;
+  min-width: 0;
   background: var(--surface-color, #ffffff);
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 12px;
@@ -123,9 +127,8 @@
   font-size: 1rem;
   font-weight: 600;
   color: var(--text-primary, #1a1a1a);
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
+  overflow-wrap: anywhere;
+  line-height: 1.3;
 }
 
 .mandateName {
@@ -245,3 +248,23 @@
 :global(.dark-theme) .emptyState p {
   color: var(--text-secondary-dark, #aaa);
 }
+
+@media (max-width: 600px) {
+  .dashboard {
+    padding: 1rem 0.875rem;
+  }
+
+  .header h1 {
+    font-size: 1.35rem;
+  }
+
+  .instanceCard {
+    padding: 1rem;
+    gap: 0.75rem;
+  }
+
+  .cardIcon {
+    width: 40px;
+    height: 40px;
+  }
+}
diff --git a/src/pages/Store.module.css b/src/pages/Store.module.css
index c4a67da..6383188 100644
--- a/src/pages/Store.module.css
+++ b/src/pages/Store.module.css
@@ -3,9 +3,12 @@
  */
 
 .store {
-  padding: 2rem;
+  box-sizing: border-box;
+  width: 100%;
   max-width: 1000px;
   margin: 0 auto;
+  padding: 2rem;
+  min-width: 0;
 }
 
 /* Header */
@@ -39,6 +42,7 @@
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 12px;
   padding: 1.5rem;
+  min-width: 0;
   display: flex;
   flex-direction: column;
   gap: 1rem;
@@ -59,6 +63,7 @@
   display: flex;
   align-items: center;
   gap: 0.75rem;
+  min-width: 0;
 }
 
 .cardIcon {
@@ -72,6 +77,8 @@
   font-size: 1.125rem;
   font-weight: 600;
   color: var(--text-primary, #1a1a1a);
+  min-width: 0;
+  overflow-wrap: anywhere;
 }
 
 .cardBody {
@@ -260,3 +267,17 @@
 :global(.dark-theme) .loading {
   color: var(--text-secondary-dark, #aaa);
 }
+
+@media (max-width: 600px) {
+  .store {
+    padding: 1rem 0.875rem;
+  }
+
+  .header h1 {
+    font-size: 1.35rem;
+  }
+
+  .card {
+    padding: 1.125rem;
+  }
+}
diff --git a/src/pages/admin/Admin.module.css b/src/pages/admin/Admin.module.css
index 20e14f6..a50aa0f 100644
--- a/src/pages/admin/Admin.module.css
+++ b/src/pages/admin/Admin.module.css
@@ -905,6 +905,51 @@
   background: var(--bg-tertiary, #f8f9fa);
 }
 
+.accessOverviewSubheading {
+  font-size: 0.72rem;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+  color: var(--text-secondary, #666);
+  margin: 1rem 0 0.5rem;
+}
+
+.accessOverviewSubheading:first-child {
+  margin-top: 0;
+}
+
+.accessOverviewRoleBullets {
+  margin: 0.25rem 0 0.85rem;
+  padding-left: 1.25rem;
+  font-size: 0.875rem;
+  line-height: 1.55;
+}
+
+.accessOverviewInstanceStack {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.accessOverviewInstanceBlock {
+  padding: 0.75rem 1rem;
+  background: var(--bg-secondary, #f5f5f5);
+  border-radius: 6px;
+  border: 1px solid var(--border-color, #e0e0e0);
+}
+
+.accessOverviewInstanceTitle {
+  font-weight: 600;
+  font-size: 0.9375rem;
+  color: var(--text-primary, #1a1a1a);
+  margin-bottom: 0.35rem;
+}
+
+.accessOverviewInstanceFeature {
+  font-weight: 500;
+  color: var(--text-secondary, #666);
+}
+
 .emptyHint {
   font-size: 0.875rem;
   color: var(--text-tertiary, #999);
diff --git a/src/pages/admin/AdminUserAccessOverviewPage.tsx b/src/pages/admin/AdminUserAccessOverviewPage.tsx
index 72adbc6..fdea742 100644
--- a/src/pages/admin/AdminUserAccessOverviewPage.tsx
+++ b/src/pages/admin/AdminUserAccessOverviewPage.tsx
@@ -47,7 +47,7 @@ interface AccessEntry {
 interface MandateInfo {
   id: string;
   name: string;
-  label?: string;
+  label?: string | null;
   roleIds: string[];
   featureInstances: {
     id: string;
@@ -58,6 +58,18 @@ interface MandateInfo {
   }[];
 }
 
+function _mandateNameLine(mandate: MandateInfo): string {
+  const label = mandate.label?.trim();
+  if (label) {
+    return `${mandate.name} (${label})`;
+  }
+  return mandate.name;
+}
+
+function _roleDescriptionLine(role: RoleInfo): string {
+  return role.description?.de || role.description?.en || '';
+}
+
 interface UserAccessOverview {
   user: UserOption;
   isSysAdmin: boolean;
@@ -174,9 +186,14 @@ export const AdminUserAccessOverviewPage: React.FC = () => {
   const renderOverviewTab = () => {
     if (!overview) return null;
 
+    const roleById = new Map(overview.roles.map((r) => [r.id, r]));
+    const globalRoles = overview.roles.filter((r) => r.scope === 'global');
+
+    const _resolveRoles = (roleIds: string[]): RoleInfo[] =>
+      roleIds.map((id) => roleById.get(id)).filter((r): r is RoleInfo => !!r);
+
     return (
       <div className={styles.scrollableContent}>
-        {/* SysAdmin Notice */}
         {overview.isSysAdmin && (
           <div className={styles.infoBox} style={{ background: '#fef3c7', borderColor: '#f59e0b' }}>
             <FaInfoCircle style={{ marginRight: '0.5rem', color: '#f59e0b' }} />
@@ -184,109 +201,148 @@ export const AdminUserAccessOverviewPage: React.FC = () => {
           </div>
         )}
 
-        {/* Mandates & Feature Instances */}
-        <h3 style={{ marginBottom: '1rem', color: 'var(--text-primary)' }}>Mandate & Feature-Instanzen</h3>
+        <h3 style={{ marginBottom: '1rem', color: 'var(--text-primary)' }}>Zugriff nach Mandant</h3>
+
         {overview.mandates.length === 0 ? (
           <p className={styles.emptyHint}>Keine Mandate-Zuordnungen vorhanden.</p>
         ) : (
           <div className={styles.rolesList} style={{ flex: 'none', overflow: 'visible' }}>
-            {overview.mandates.map(mandate => (
-              <div key={mandate.id} className={styles.roleCard}>
-                <div 
-                  className={styles.roleHeader}
-                  onClick={() => toggleMandate(mandate.id)}
-                >
-                  <div className={styles.roleInfo}>
-                    {expandedMandates.has(mandate.id) ? <FaChevronDown className={styles.expandIcon} /> : <FaChevronRight className={styles.expandIcon} />}
-                    <span className={styles.roleLabel}>{mandate.label || mandate.name}</span>
-                    <span className={styles.roleDescription}>
-                      {mandate.featureInstances.length} Feature-Instanz(en)
-                    </span>
+            {overview.mandates.map((mandate) => {
+              const mandateRoles = _resolveRoles(mandate.roleIds);
+
+              return (
+                <div key={mandate.id} className={styles.roleCard}>
+                  <div className={styles.roleHeader} onClick={() => toggleMandate(mandate.id)}>
+                    <div className={styles.roleInfo} style={{ flexWrap: 'wrap', rowGap: '0.35rem' }}>
+                      {expandedMandates.has(mandate.id) ? (
+                        <FaChevronDown className={styles.expandIcon} />
+                      ) : (
+                        <FaChevronRight className={styles.expandIcon} />
+                      )}
+                      <span className={styles.roleLabel}>{_mandateNameLine(mandate)}</span>
+                      <span className={styles.roleDescription}>
+                        {mandateRoles.length} Mandantenrolle(n) · {mandate.featureInstances.length} Feature-Instanz(en)
+                      </span>
+                    </div>
                   </div>
+                  {expandedMandates.has(mandate.id) && (
+                    <div className={styles.roleContent}>
+                      {mandateRoles.length === 0 ? (
+                        <p className={styles.emptyHint}>Keine Rollen direkt am Mandanten.</p>
+                      ) : (
+                        <ul className={styles.accessOverviewRoleBullets}>
+                          {mandateRoles.map((r) => (
+                            <li key={r.id}>
+                              <strong>{r.roleLabel}</strong>
+                              <span
+                                className={styles.badge}
+                                style={{
+                                  background: getScopeColor(r.scope),
+                                  color: 'white',
+                                  marginLeft: '0.35rem',
+                                  fontSize: '0.65rem',
+                                  verticalAlign: 'middle',
+                                }}
+                              >
+                                {r.scope}
+                              </span>
+                            </li>
+                          ))}
+                        </ul>
+                      )}
+
+                      <div className={styles.accessOverviewSubheading}>Feature-Instanzen</div>
+                      {mandate.featureInstances.length === 0 ? (
+                        <p className={styles.emptyHint}>Keine Feature-Instanzen zugewiesen.</p>
+                      ) : (
+                        <div className={styles.accessOverviewInstanceStack}>
+                          {mandate.featureInstances.map((instance) => {
+                            const instanceRoles = _resolveRoles(instance.roleIds);
+                            const featureTitle = instance.featureLabel?.de || instance.featureCode;
+                            return (
+                              <div key={instance.id} className={styles.accessOverviewInstanceBlock}>
+                                <div className={styles.accessOverviewInstanceTitle}>
+                                  {instance.label}{' '}
+                                  <span className={styles.accessOverviewInstanceFeature}>({featureTitle})</span>
+                                </div>
+                                {instanceRoles.length === 0 ? (
+                                  <p className={styles.emptyHint} style={{ margin: '0.35rem 0 0' }}>
+                                    Keine Rollen.
+                                  </p>
+                                ) : (
+                                  <ul className={styles.accessOverviewRoleBullets}>
+                                    {instanceRoles.map((r) => (
+                                      <li key={r.id}>
+                                        <strong>{r.roleLabel}</strong>
+                                        <span
+                                          className={styles.badge}
+                                          style={{
+                                            background: getScopeColor(r.scope),
+                                            color: 'white',
+                                            marginLeft: '0.35rem',
+                                            fontSize: '0.65rem',
+                                            verticalAlign: 'middle',
+                                          }}
+                                        >
+                                          {r.scope}
+                                        </span>
+                                      </li>
+                                    ))}
+                                  </ul>
+                                )}
+                              </div>
+                            );
+                          })}
+                        </div>
+                      )}
+                    </div>
+                  )}
                 </div>
-                {expandedMandates.has(mandate.id) && (
-                  <div className={styles.roleContent}>
-                    {mandate.featureInstances.length === 0 ? (
-                      <p className={styles.emptyHint}>Keine Feature-Instanzen zugewiesen.</p>
-                    ) : (
-                      <div style={{ display: 'flex', flexDirection: 'column', gap: '0.5rem' }}>
-                        {mandate.featureInstances.map(instance => (
-                          <div 
-                            key={instance.id}
-                            style={{
-                              padding: '0.75rem',
-                              background: 'var(--bg-secondary)',
-                              borderRadius: '6px',
-                              border: '1px solid var(--border-color)',
-                            }}
-                          >
-                            <div style={{ fontWeight: 500, marginBottom: '0.25rem' }}>
-                              {instance.label}
-                            </div>
-                            <div style={{ fontSize: '0.75rem', color: 'var(--text-secondary)' }}>
-                              Feature: {instance.featureLabel?.de || instance.featureCode}
-                            </div>
-                            <div style={{ fontSize: '0.75rem', color: 'var(--text-secondary)', marginTop: '0.25rem' }}>
-                              Rollen: {instance.roleIds.length > 0 
-                                ? overview.roles
-                                    .filter(r => instance.roleIds.includes(r.id))
-                                    .map(r => r.roleLabel)
-                                    .join(', ')
-                                : 'Keine'
-                              }
-                            </div>
-                          </div>
-                        ))}
-                      </div>
-                    )}
-                  </div>
-                )}
-              </div>
-            ))}
+              );
+            })}
           </div>
         )}
 
-        {/* Roles */}
-        <h3 style={{ marginTop: '2rem', marginBottom: '1rem', color: 'var(--text-primary)' }}>Zugewiesene Rollen</h3>
-        {overview.roles.length === 0 ? (
-          <p className={styles.emptyHint}>Keine Rollen zugewiesen.</p>
-        ) : (
-          <div className={styles.rolesList} style={{ flex: 'none', overflow: 'visible' }}>
-            {overview.roles.map(role => (
-              <div key={role.id} className={styles.roleCard}>
-                <div 
-                  className={styles.roleHeader}
-                  onClick={() => toggleRole(role.id)}
-                >
-                  <div className={styles.roleInfo}>
-                    {expandedRoles.has(role.id) ? <FaChevronDown className={styles.expandIcon} /> : <FaChevronRight className={styles.expandIcon} />}
-                    <span className={styles.roleLabel}>{role.roleLabel}</span>
-                    <span 
-                      className={styles.badge}
-                      style={{ 
-                        background: getScopeColor(role.scope), 
-                        color: 'white',
-                        marginLeft: '0.5rem'
-                      }}
-                    >
-                      {role.scope}
-                    </span>
-                  </div>
-                </div>
-                {expandedRoles.has(role.id) && (
-                  <div className={styles.roleContent}>
-                    <div style={{ fontSize: '0.875rem' }}>
-                      <p><strong>Beschreibung:</strong> {role.description?.de || role.description?.en || '-'}</p>
-                      <p><strong>Quelle:</strong> {role.source === 'mandate' 
-                        ? `Mandate: ${role.sourceMandateName}` 
-                        : `Feature-Instanz: ${role.sourceInstanceLabel}`
-                      }</p>
+        {globalRoles.length > 0 && (
+          <>
+            <h3 style={{ marginTop: '2rem', marginBottom: '1rem', color: 'var(--text-primary)' }}>
+              Globale Rollen
+            </h3>
+            <p className={styles.emptyHint} style={{ marginTop: '-0.5rem', marginBottom: '1rem' }}>
+              Nicht an einen Mandanten gebunden.
+            </p>
+            <div className={styles.rolesList} style={{ flex: 'none', overflow: 'visible' }}>
+              {globalRoles.map((role) => (
+                <div key={role.id} className={styles.roleCard}>
+                  <div className={styles.roleHeader} onClick={() => toggleRole(role.id)}>
+                    <div className={styles.roleInfo}>
+                      {expandedRoles.has(role.id) ? (
+                        <FaChevronDown className={styles.expandIcon} />
+                      ) : (
+                        <FaChevronRight className={styles.expandIcon} />
+                      )}
+                      <span className={styles.roleLabel}>{role.roleLabel}</span>
+                      <span
+                        className={styles.badge}
+                        style={{ background: getScopeColor(role.scope), color: 'white', marginLeft: '0.5rem' }}
+                      >
+                        {role.scope}
+                      </span>
                     </div>
                   </div>
-                )}
-              </div>
-            ))}
-          </div>
+                  {expandedRoles.has(role.id) && (
+                    <div className={styles.roleContent}>
+                      <div style={{ fontSize: '0.875rem' }}>
+                        <p>
+                          <strong>Beschreibung:</strong> {_roleDescriptionLine(role) || '—'}
+                        </p>
+                      </div>
+                    </div>
+                  )}
+                </div>
+              ))}
+            </div>
+          </>
         )}
       </div>
     );
diff --git a/src/pages/admin/wizards/AdminInvitationWizardPage.tsx b/src/pages/admin/wizards/AdminInvitationWizardPage.tsx
index 79fe0a5..fffc5b5 100644
--- a/src/pages/admin/wizards/AdminInvitationWizardPage.tsx
+++ b/src/pages/admin/wizards/AdminInvitationWizardPage.tsx
@@ -128,9 +128,8 @@ export const AdminInvitationWizardPage: React.FC = () => {
 
   useEffect(() => {
     if (inviteType === 'featureInstance' && selectedMandate) {
-      fetchInstances(selectedMandate.id).then(data =>
-        setInstances((data || []).filter((i: FeatureInstance) => i.enabled))
-      );
+      // Show all instances for the mandate (including disabled). Previously only `enabled` instances were listed, which hid deactivated instances from admins.
+      fetchInstances(selectedMandate.id).then(data => setInstances(data || []));
     } else {
       setInstances([]);
       setSelectedInstance(null);
@@ -411,7 +410,7 @@ export const AdminInvitationWizardPage: React.FC = () => {
             <div style={{ marginBottom: '16px' }}>
               <label className={styles.formLabel}>Feature-Instanz *</label>
               {instances.length === 0 ? (
-                <p style={{ fontSize: '13px', color: 'var(--text-secondary)' }}>Keine aktiven Feature-Instanzen für diesen Mandanten vorhanden.</p>
+                <p style={{ fontSize: '13px', color: 'var(--text-secondary)' }}>Keine Feature-Instanzen für diesen Mandanten vorhanden.</p>
               ) : (
                 <select
                   className={styles.filterSelect}
@@ -423,9 +422,13 @@ export const AdminInvitationWizardPage: React.FC = () => {
                   }}
                 >
                   <option value="">-- Feature-Instanz wählen --</option>
-                  {instances.map(inst => (
-                    <option key={inst.id} value={inst.id}>{inst.label || inst.featureCode}</option>
-                  ))}
+                  {instances.map(inst => {
+                    const baseLabel = inst.label || inst.featureCode;
+                    const suffix = inst.enabled === false ? ' (deaktiviert)' : '';
+                    return (
+                      <option key={inst.id} value={inst.id}>{`${baseLabel}${suffix}`}</option>
+                    );
+                  })}
                 </select>
               )}
             </div>
diff --git a/src/pages/billing/BillingDataView.tsx b/src/pages/billing/BillingDataView.tsx
index 1d2571f..feb44f1 100644
--- a/src/pages/billing/BillingDataView.tsx
+++ b/src/pages/billing/BillingDataView.tsx
@@ -65,8 +65,9 @@ const BalanceCard: React.FC<BalanceCardProps> = ({ balance, onCheckout, checkout
     return 'Prepaid (Mandant)';
   };
 
-  const canTopUp = balance.billingModel === 'PREPAY_USER'
-    || balance.billingModel === 'PREPAY_MANDATE';
+  // Stripe top-up on this page: only personal prepaid wallets. Mandate pool (PREPAY_MANDATE) is topped up by mandate admins via Administration → Billing.
+  const canStripeTopUpHere = balance.billingModel === 'PREPAY_USER';
+  const isMandatePrepaidPool = balance.billingModel === 'PREPAY_MANDATE';
 
   return (
     <div className={`${styles.balanceCard} ${balance.isWarning ? styles.warning : ''}`}>
@@ -82,7 +83,20 @@ const BalanceCard: React.FC<BalanceCardProps> = ({ balance, onCheckout, checkout
           Niedriges Guthaben
         </div>
       )}
-      {canTopUp && onCheckout && (
+      {isMandatePrepaidPool && (
+        <p
+          style={{
+            marginTop: '12px',
+            fontSize: '13px',
+            lineHeight: 1.45,
+            opacity: 0.75,
+            marginBottom: 0,
+          }}
+        >
+          Aufladung des Mandanten-Guthabens ist nur für Mandanten-Administratoren möglich (Menü Administration → Billing).
+        </p>
+      )}
+      {canStripeTopUpHere && onCheckout && (
         <div style={{ marginTop: '12px' }}>
           {!showCheckout ? (
             <button