Fix

server.py

@@ -106,8 +106,15 @@ async def create_invoice(req: BuyPlanRequest, request: Request):
         return JSONResponse(status_code=500, content={"error": str(e)})
 
 @app.get("/api/user/{user_id}")
-async def get_user_stats(user_id: int):
+async def get_user_stats(user_id: int, username: str = "Unknown", lang: str = "en"):
     user = await db.get_user(user_id)
+    
+    # Auto-register admin if not exists
+    if not user and user_id in CONFIG["ADMIN_IDS"]:
+        marzban_username = username.lower() if username and username != "Unknown" else f"admin_{user_id}"
+        await db.create_user(user_id, username, marzban_username)
+        user = await db.get_user(user_id)
+
     if not user:
         return JSONResponse(status_code=404, content={"error": "User not found"})
 

web_app/static/js/app.js

@@ -379,7 +379,9 @@ async function loadDashboard() {
     document.getElementById('user-name').textContent = currentState.user.first_name;
 
     try {
-        const res = await fetch(`${API_BASE}/user/${currentState.user.id}`);
+        const username = currentState.user.username || '';
+        const lang = currentState.lang || 'en';
+        const res = await fetch(`${API_BASE}/user/${currentState.user.id}?username=${encodeURIComponent(username)}&lang=${lang}`);
 
         if (res.status === 404) {
             showInviteRequired();