Request for the DEV team.

I have an issue with the wallet.  I have purchased a new phone.  Downloaded the wallet and tried logging in, but it says that I'm "logged in on another device somewhere and to log out of that device".  The problem is that I know for SURE that my old phone has been wiped clean.  I quadruple checked it.

Please assist.

Many thanks in advance,
(My username is 'MoreGuney'.)