diff --git a/public/assets/wallet.js b/public/assets/wallet.js
index ab982b6..4b2cafc 100644
--- a/public/assets/wallet.js
+++ b/public/assets/wallet.js
@@ -17,7 +17,15 @@ window.IAPWallet = (function () {
       const mod = await import(APPKIT_URL);
       const { createAppKit, WagmiAdapter, networks } = mod;
       const netMap = { 80002: networks.polygonAmoy, 137: networks.polygon };
-      const net = netMap[Number(c.chainId)] || networks.polygonAmoy;
+      const base = netMap[Number(c.chainId)] || networks.polygonAmoy;
+      // Override the chain's RPC with our clean public endpoint. AppKit's built-in
+      // networks advertise the WalletConnect RPC proxy
+      // (rpc.walletconnect.org/v1/?chainId=…&projectId=…) as the chain RPC, and
+      // wallets reject that query-string URL as "Invalid URL" when adding/switching
+      // the network — the cause of Trust's "Invalid URL", MetaMask's switch loop,
+      // and the failed mobile buy (the chain switch never completed).
+      const rpc = String(c.rpc || '').trim();
+      const net = rpc ? Object.assign({}, base, { rpcUrls: { default: { http: [rpc] }, public: { http: [rpc] } } }) : base;
       const projectId = String(c.walletConnectProjectId || '').trim();
       const wagmiAdapter = new WagmiAdapter({ networks: [net], projectId });
       modal = createAppKit({
diff --git a/public/index.html b/public/index.html
index d4e9802..1368b15 100644
--- a/public/index.html
+++ b/public/index.html
@@ -439,7 +439,7 @@
 </section>
 
 <script src="/assets/common.js?v=20260908c"></script>
-<script src="/assets/wallet.js?v=20260908l"></script>
+<script src="/assets/wallet.js?v=20260908m"></script>
 <script src="/assets/home.js?v=20260906m"></script>
 <script src="/assets/chat.js?v=20260906m"></script>
 </body>
diff --git a/public/my.html b/public/my.html
index bd48373..2aba520 100644
--- a/public/my.html
+++ b/public/my.html
@@ -696,7 +696,7 @@
   </div>
 </div>
 <script src="/assets/common.js?v=20260908c"></script>
-<script src="/assets/wallet.js?v=20260908l"></script>
+<script src="/assets/wallet.js?v=20260908m"></script>
 <script src="/assets/my.js?v=20260908l"></script>
 <script src="/assets/chat.js?v=20260907l"></script>
 </body>