I can not log in with my user since 21.04.2017 17:55 clock

I can not log in with my user since 21.04.2017 17:55 clock.  
Not with the PC and not with my phone (UMTS ).   
Is it possible that my user has been deleted?
Only the registration on the support page works.  

What is wrong?  
  

 

I see you submitted a support ticket, so we’ll work with you further there. Thanks!