diff --git a/frontend/app.vue b/frontend/app.vue
index 48885ec..a08a3a2 100644
--- a/frontend/app.vue
+++ b/frontend/app.vue
@@ -650,6 +650,7 @@ async function loadTelegramConnectStatus() {
 async function startTelegramBusinessConnect() {
   if (telegramConnectBusy.value) return;
   telegramConnectBusy.value = true;
+  const popup = process.client ? window.open("about:blank", "_blank", "noopener,noreferrer") : null;
   try {
     const result = await $fetch<{
       ok: boolean;
@@ -660,8 +661,15 @@ async function startTelegramBusinessConnect() {
     telegramConnectStatus.value = result?.status ?? "pending_link";
     telegramConnectUrl.value = String(result?.connectUrl ?? "").trim();
     if (telegramConnectUrl.value && process.client) {
-      window.open(telegramConnectUrl.value, "_blank", "noopener,noreferrer");
+      if (popup) {
+        popup.location.href = telegramConnectUrl.value;
+      } else {
+        window.open(telegramConnectUrl.value, "_blank", "noopener,noreferrer");
+      }
     }
+  } catch {
+    popup?.close();
+    telegramConnectStatus.value = "not_connected";
   } finally {
     telegramConnectBusy.value = false;
     await loadTelegramConnectStatus();