Problem signing in to iCloud after update

Hello,

After updating to iOS 11 last month, I was booted from apple music and the app store. I have tried everything i can think of to fix the problem but keep getting an error message the says "Could not sign in. Cannot connect to the server."

If I try to sign in to my apple music, it pops up the sign in screen, i type my info, and the screen goes away but still doesn't sign me in.

Any tips or fixes would be appreciated, since after a MONTH of dealing with apple support I have literally gotten nowhere.

Thanks,

Tim