I am having the exact same issue as the OP.

No solution in 5 days??

How do we log back into our accounts?

Thank you,

darkecomm said:

I logged out by accident on my ipad, when I relaunched the game it took me through the tutorial (really should have a way to skip that), but when I got to the login screen under the profile section it just keeps telling me that the e-mail address is already in use on another account.  

I'm not attempting to setup a new account, I'm just at the login portion, I have not clicked "Create ID".   But I still get the error. 

CelticRebel said:

Same issue,,I'm a returning player and downloaded to a new phone and it tells me the same that email is linked to another account

Hello, PM me your in game id and a link to this post. I will see what i can find out.

dconverse said:

My screen never gets past the authentication. Game will not load

Hello, PM me your in game id and a link to this post. I will see what i can find out.