Server disconnection in app

Always when I Install the app and I'm gonna sign in to my account, I see a server disconnection error and however I retry, it wouldn't be fixed. I live in Iran but I've tried with Psiphon VPN also and it wasn't useful though

Not sure what the problem could be... i would suggest a bug report

https://atwar-game.com/forum/topic.php?topic_id=39713