Encryption key error after upgrade

Hi
After upgrade from V13 to V14 I am having issue related to Encryption key
I have both the old and the new keys.

With the new key , that was created during the restore process, everything works except 2FA login

When I use the old key, 2FA works but not backups.

Email and login passwords are fine : just re-enter them and save and it works.

PLease can someone help ?