Hello,
let me answer to you:
frank_riloaded, can you please tell us more or send us logs from c:\ProgramData\AVAST Software\Avast\log? Please also try to change your default browser to Avast browser and see if the Bank Mode starts working for you again.
Mark136, you mean that passwords from your browser inside Bank mode were removed? I would recommend to use the Sync feature inside Avast Browser to get them synced inside Bank Mode.
Hope this helps!