slow or not working servers September 2018. ONLY report your problem here!

If you can get to the change server page it will list your worlds. It will be at an early part of the list. If not you can't get to the change server page (some still can't) then accept the world suggested then launch a base then go to the in-game changer. It will have a list of the worlds you have bases on. Hopefully one route will work.

It's difficult to say if you're on a 'broken' world as it is broken and therefore we're unable to check, unless you know the world name/number.