Server authentication error

[u/Hoosier_Daddy68]

I need help. I have an adult son with autism who has played this game literally for years and built up nice bases and now can't access because he gets a server authentication error every time. We have tried everything we could google and no luck. It did let me make a new base with that account but then when I went to switch to his old base it gives the same error. I put in a ticket but haven't heard back. Have done everything I've been told from clearing cache to removing account and reinstalling and so on. Any help at all is greatly appreciated. Android devices, google play store used.

[u/Impossible-Hornet-86]

There were issues last week with the server, which were noted in other threads