I meet the same problem few minutes ago.
Account closed on my PC.
But account frozen on the android app.
Just had to follow few steps to recover the account on android, then just log in again on the PC and it was fine.
Dont't know why this problem occurred (a bug ?) but all good now.
I must specify that this is the kind of (unpleasant) surprise that I do not appreciate at all. Hoping that it will not happen too often...