diff --git a/src/App.vue b/src/App.vue
index 119f4a6..25c4def 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -381,14 +381,14 @@ const pwaInstallCopy = computed(() => {
     ? 'Install the app when prompted, then continue signup inside L484.'
     : 'Open Chrome menu, choose Install app or Add to Home screen, then launch L484 from the app icon.'
   return deferredInstallPrompt.value
-    ? 'Install L484 as a desktop app when prompted, then continue signup.'
-    : 'Use your browser menu or address bar install icon to install L484, then open the installed app.'
+    ? 'Use the browser install prompt to install L484, then continue signup.'
+    : 'Install L484 using the browser install icon in the address bar. The install prompt appears here when the browser makes it available.'
 })
 const pwaInstallPrimaryLabel = computed(() => {
   if (isPwaStandalone.value) return 'Continue signup'
   if (deferredInstallPrompt.value) return 'Install app'
   if (installPlatform.value === 'ios') return 'I installed it'
-  return 'Continue after install'
+  return 'Install app'
 })
 const membershipBtcAmount = computed(() =>
   bitcoinUsdPrice.value ? MEMBERSHIP_MONTHLY_USD / bitcoinUsdPrice.value : 0,
@@ -774,6 +774,11 @@ const handlePwaInstallPrimary = async () => {
     return
   }
 
+  if (installPlatform.value === 'desktop') {
+    formError.value = 'The browser install prompt is not available yet. Use the install icon in the address bar, or refresh once and press Install app again.'
+    return
+  }
+
   formError.value = installPlatform.value === 'ios'
     ? 'Install L484 from Safari using Share, Add to Home Screen, then reopen it from the app icon.'
     : 'Install L484 from your browser menu or address bar, then reopen the installed app to continue.'
diff --git a/src/services/notifications.js b/src/services/notifications.js
index 2721d1e..196f219 100644
--- a/src/services/notifications.js
+++ b/src/services/notifications.js
@@ -2,14 +2,14 @@ import { ref } from 'vue'
 
 const permission = ref(typeof Notification === 'undefined' ? 'unsupported' : Notification.permission)
 
-const urlBase64ToUint8Array = (base64String) => {
+const urlBase64ToArrayBuffer = (base64String) => {
   const clean = String(base64String || '').trim().replace(/^["']|["']$/g, '')
   const padding = '='.repeat((4 - (clean.length % 4)) % 4)
   const base64 = (clean + padding).replace(/-/g, '+').replace(/_/g, '/')
   const rawData = window.atob(base64)
   const key = new Uint8Array([...rawData].map((char) => char.charCodeAt(0)))
   if (key.length !== 65 || key[0] !== 4) throw new Error('VAPID public key is not valid.')
-  return key
+  return key.buffer
 }
 
 export const notificationPermission = permission
@@ -34,13 +34,16 @@ const subscribeWithRetry = async (registration, applicationServerKey) => {
   try {
     return await registration.pushManager.subscribe({ userVisibleOnly: true, applicationServerKey })
   } catch (error) {
-    await registration.update().catch(() => {})
-    await new Promise((resolve) => window.setTimeout(resolve, 350))
+    await registration.unregister().catch(() => {})
+    await new Promise((resolve) => window.setTimeout(resolve, 500))
+    const freshRegistration = await navigator.serviceWorker.register('/sw.js', { scope: '/' })
+    const readyRegistration = await navigator.serviceWorker.ready
+    const activeRegistration = readyRegistration || freshRegistration
     try {
-      return await registration.pushManager.subscribe({ userVisibleOnly: true, applicationServerKey })
+      return await activeRegistration.pushManager.subscribe({ userVisibleOnly: true, applicationServerKey })
     } catch {
       const message = error instanceof Error ? error.message : 'Push service error.'
-      throw new Error(`Push registration failed: ${message}`)
+      throw new Error(`Push registration failed: ${message}. Close and reopen the installed app, then try again.`)
     }
   }
 }
@@ -54,14 +57,14 @@ export const subscribeToNotifications = async () => {
   const keyData = await keyResponse.json().catch(() => ({}))
   if (!keyResponse.ok || !keyData.publicKey) throw new Error('VAPID public key is not configured.')
   if (!keyData.configured) throw new Error('VAPID private key is not configured on the server.')
-  const applicationServerKey = urlBase64ToUint8Array(keyData.publicKey)
+  const applicationServerKey = urlBase64ToArrayBuffer(keyData.publicKey)
 
   const requested = await Notification.requestPermission()
   permission.value = requested
   if (requested !== 'granted') throw new Error('Notification permission was not granted.')
 
-  const registration = await navigator.serviceWorker.register('/sw.js')
-  await navigator.serviceWorker.ready
+  await navigator.serviceWorker.register('/sw.js', { scope: '/' })
+  const registration = await navigator.serviceWorker.ready
   const existing = await registration.pushManager.getSubscription()
   if (existing) return saveSubscription(existing)
 
diff --git a/src/style.css b/src/style.css
index 6efa255..92d121d 100644
--- a/src/style.css
+++ b/src/style.css
@@ -1476,7 +1476,7 @@ body.menu-open {
   display: grid;
   grid-template-columns: auto minmax(0, 1fr) auto;
   align-items: center;
-  gap: 1rem;
+  gap: clamp(0.45rem, 1.2vw, 1rem);
   border-bottom: 1px solid rgba(255, 255, 255, 0.1);
   background: rgba(5, 5, 5, 0.88);
   padding: 0.65rem var(--admin-page-x);
@@ -1490,19 +1490,19 @@ body.menu-open {
 .admin-profile-button {
   display: flex;
   align-items: center;
-  gap: 0.75rem;
+  gap: clamp(0.45rem, 0.8vw, 0.75rem);
   border: 1px solid rgba(255, 255, 255, 0.13);
   border-radius: 8px;
   background: rgba(255, 255, 255, 0.055);
-  padding: 0.55rem 0.7rem;
+  padding: 0.55rem clamp(0.5rem, 0.8vw, 0.7rem);
   color: white;
   text-align: left;
 }
 
 .admin-avatar {
   display: grid;
-  width: 2.25rem;
-  height: 2.25rem;
+  width: clamp(1.9rem, 2.4vw, 2.25rem);
+  height: clamp(1.9rem, 2.4vw, 2.25rem);
   place-items: center;
   border: 1px solid rgba(255, 255, 255, 0.16);
   border-radius: 999px;
@@ -1517,14 +1517,14 @@ body.menu-open {
 }
 
 .admin-profile-text strong {
-  font-size: 0.82rem;
+  font-size: clamp(0.68rem, 0.9vw, 0.82rem);
   line-height: 1;
 }
 
 .admin-profile-text small {
   color: rgba(255, 255, 255, 0.48);
   font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
-  font-size: 0.68rem;
+  font-size: clamp(0.58rem, 0.75vw, 0.68rem);
 }
 
 .admin-profile-menu {
@@ -1586,8 +1586,9 @@ body.menu-open {
 
 .admin-tabbar {
   display: grid;
-  grid-template-columns: repeat(5, minmax(0, 1fr));
-  gap: 0.5rem;
+  grid-auto-flow: column;
+  grid-auto-columns: minmax(0, 1fr);
+  gap: clamp(0.22rem, 0.7vw, 0.5rem);
   min-width: 0;
 }
 
@@ -1616,10 +1617,10 @@ body.menu-open {
 }
 
 .desktop-admin-tabbar .admin-tab {
-  gap: 0.42rem;
-  padding: 0.64rem 0.5rem;
-  font-size: 0.62rem;
-  letter-spacing: 0.1em;
+  gap: clamp(0.22rem, 0.5vw, 0.42rem);
+  padding: 0.62rem clamp(0.28rem, 0.7vw, 0.5rem);
+  font-size: clamp(0.5rem, 0.75vw, 0.62rem);
+  letter-spacing: clamp(0.055em, 0.15vw, 0.1em);
 }
 
 .admin-tab svg {