If its a server error then its something that is wrong on King's side of things. Probably a temporary issue. Maybe you can try to connect to the Kingdom to save your progress/get help etc. Its the little orange button with the crowns in it. I tried that and they sent me here.
I tried. I updated it. Deleted it and reinstalled it.. I've even got a new phone since and downloaded it on it. It's "my accout" that's the issue... so now I just gave up and uninstalled it for good... I never could get ANYTHING done on here with it... So I just said forget it. Thanks for trying tho.