diff --git a/CHANGELOG.md b/CHANGELOG.md
index 37657a2..70e14b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 Format mengikuti [Keep a Changelog](https://keepachangelog.com/) dan [Semantic Versioning](https://semver.org/).
 
+## [0.5.10] — 2026-11-05 — "gowa-mode"
+
+### Ditambahkan
+- Pilihan **Mode Akses GOWA** di Admin → WhatsApp: **Cloud (HTTPS)** atau **Local (HTTP)**. Mode Local menampilkan peringatan wajib polyfill `crypto.randomUUID` beserta tautan panduan wiki.
+- Halaman wiki **GOWA**: setup Compose, perbedaan Cloud/Local, perintah polyfill, setting OPEN-ISP, dan troubleshooting QR/webhook.
+
 ## [0.5.9] — 2026-11-05 — "gowa-qr-image"
 
 ### Diperbaiki
diff --git a/README.md b/README.md
index 9a96377..bba09a6 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
 
 <p align="center">
   <img src="https://img.shields.io/badge/lisensi-ISC-ADFF2F" alt="Lisensi: ISC">
-  <img src="https://img.shields.io/badge/versi-0.5.9_gowa--qr-image-ADFF2F" alt="Versi 0.5.9 (gowa-qr-image)">
+  <img src="https://img.shields.io/badge/versi-0.5.10_gowa--mode-ADFF2F" alt="Versi 0.5.10 (gowa-mode)">
   <img src="https://img.shields.io/badge/Node.js-%E2%89%A520-339933" alt="Node.js >= 20">
   <img src="https://img.shields.io/badge/docker-ready-2496ED?logo=docker&logoColor=white" alt="Docker">
   <a href="https://demo-openisp.oxpoe.xyz"><img src="https://img.shields.io/badge/demo-live-ADFF2F?logo=googlechrome&logoColor=black" alt="Demo"></a>
diff --git a/package.json b/package.json
index 62001a3..9300688 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "open-isp",
-  "version": "0.5.9",
+  "version": "0.5.10",
   "description": "OPEN-ISP \u2014 sistem billing & manajemen ISP open-source (PWA pelanggan, multi-OLT, RADIUS, WhatsApp, QRIS)",
   "main": "app-customer.js",
   "scripts": {
diff --git a/routes/adminPortal.js b/routes/adminPortal.js
index a46e83d..28008d9 100644
--- a/routes/adminPortal.js
+++ b/routes/adminPortal.js
@@ -6691,8 +6691,10 @@ router.get('/whatsapp', requireAdminSession, requireSidebarMenuAccess('whatsapp'
     fonnte_api_url: getSetting('fonnte_api_url', 'https://api.fonnte.com/send'),
     fonnte_country_code: getSetting('fonnte_country_code', '62')
   };
+  const gowaBaseUrl = getSetting('gowa_base_url', 'http://127.0.0.1:3000');
   const gowaSettings = {
-    gowa_base_url: getSetting('gowa_base_url', 'http://127.0.0.1:3000'),
+    gowa_mode: getSetting('gowa_mode', /^https:/i.test(String(gowaBaseUrl)) ? 'cloud' : 'local'),
+    gowa_base_url: gowaBaseUrl,
     gowa_username: getSetting('gowa_username', ''),
     gowa_password: getSetting('gowa_password', ''),
     gowa_device_id: getSetting('gowa_device_id', ''),
@@ -6729,6 +6731,7 @@ router.post('/whatsapp/gateway-settings', requireAdminSession, express.urlencode
       fonnte_token,
       fonnte_api_url,
       fonnte_country_code,
+      gowa_mode,
       gowa_base_url,
       gowa_username,
       gowa_password,
@@ -6746,6 +6749,7 @@ router.post('/whatsapp/gateway-settings', requireAdminSession, express.urlencode
       fonnte_token: String(fonnte_token || '').trim(),
       fonnte_api_url: String(fonnte_api_url || 'https://api.fonnte.com/send').trim(),
       fonnte_country_code: String(fonnte_country_code || '62').trim(),
+      gowa_mode: String(gowa_mode || 'cloud').trim() === 'local' ? 'local' : 'cloud',
       gowa_base_url: String(gowa_base_url || 'http://127.0.0.1:3000').trim(),
       gowa_username: String(gowa_username || '').trim(),
       gowa_password: String(gowa_password || '').trim(),
diff --git a/version.txt b/version.txt
index 89235c0..4e69c2a 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.5.9
\ No newline at end of file
+0.5.10
\ No newline at end of file
diff --git a/views/admin/whatsapp.ejs b/views/admin/whatsapp.ejs
index ac0b93d..cf0a477 100644
--- a/views/admin/whatsapp.ejs
+++ b/views/admin/whatsapp.ejs
@@ -154,6 +154,25 @@
         <!-- 3. GOWA (go-whatsapp-web-multidevice) FIELDS -->
         <div id="gowa_fields_container" style="<%= waGatewayType === 'gowa' ? '' : 'display:none;' %> background: rgba(173,255,47,0.05); padding: 16px; border-radius: 10px; border: 1px solid var(--primary-glow); margin-bottom: 16px;">
           <div class="fw6 mb12" style="color: var(--primary); font-size: 13px;"><i class="bi bi-lightning-charge-fill"></i> Konfigurasi GOWA (go-whatsapp-web-multidevice) — Ringan / Self-Hosted</div>
+          <div class="form-row mb12">
+            <div class="fg" style="flex:1;">
+              <label class="fl">Mode Akses GOWA</label>
+              <select class="fs" name="gowa_mode" id="gowa_mode" onchange="toggleGowaMode()">
+                <option value="cloud" <%= gowaSettings.gowa_mode === 'local' ? '' : 'selected' %>>Cloud (HTTPS) — disarankan</option>
+                <option value="local" <%= gowaSettings.gowa_mode === 'local' ? 'selected' : '' %>>Local (HTTP) — wajib polyfill</option>
+              </select>
+            </div>
+            <div class="fg" style="flex:2;">
+              <label class="fl">Keterangan</label>
+              <div id="gowa_mode_hint" style="font-size:11.5px;color:var(--muted);line-height:1.5">
+                <% if (gowaSettings.gowa_mode === 'local') { %>
+                  Base URL <code>http://IP:3000</code>. UI GOWA wajib diberi polyfill <code>crypto.randomUUID</code> (atau akses lewat SSH tunnel). Panduan: <a href="https://gitea.oxpoe.xyz/oxpoe/open-isp/wiki/Konfigurasi" target="_blank" rel="noopener" style="color:var(--primary)">Wiki → Konfigurasi → GOWA Local</a>.
+                <% } else { %>
+                  Base URL <code>https://domain-gowa</code> dengan TLS. UI GOWA langsung normal, tanpa polyfill.
+                <% } %>
+              </div>
+            </div>
+          </div>
           <div class="form-row mb12">
             <div class="fg" style="flex:2;">
               <label class="fl">Base URL GOWA *</label>
@@ -218,6 +237,19 @@
     </div>
 
     <script>
+      function toggleGowaMode() {
+        var mode = (document.getElementById('gowa_mode') || {}).value || 'cloud';
+        var hint = document.getElementById('gowa_mode_hint');
+        var base = document.querySelector('input[name="gowa_base_url"]');
+        if (mode === 'local') {
+          if (hint) hint.innerHTML = 'Base URL <code>http://IP:3000</code>. UI GOWA wajib diberi polyfill <code>crypto.randomUUID</code> (atau akses lewat SSH tunnel). Panduan: <a href="https://gitea.oxpoe.xyz/oxpoe/open-isp/wiki/Konfigurasi" target="_blank" rel="noopener" style="color:var(--primary)">Wiki &rarr; Konfigurasi &rarr; GOWA Local</a>.';
+          if (base) base.placeholder = 'http://IP:3000';
+        } else {
+          if (hint) hint.innerHTML = 'Base URL <code>https://domain-gowa</code> dengan TLS. UI GOWA langsung normal, tanpa polyfill.';
+          if (base) base.placeholder = 'https://gowa.domainmu.com';
+        }
+      }
+
       function toggleGatewayFields() {
         const val = document.getElementById('wa_gateway_type').value;
         document.getElementById('fonnte_fields_container').style.display = val === 'fonnte' ? 'block' : 'none';