Hi RejZoR,
we would like to investigate your problem. Can you please collect logs from these folders and share it with us? Thank you.
c:\ProgramData\AVAST Software\Persistent Data\Avast\Logs\
c:\ProgramData\AVAST Software\Avast\log\
One more question. You wrote: "I installed Premium version from scratch". It means installation on OS where AVAST has never been installed before or you uninstalled previous version and installed Premium Security or it was some reinstallation of previous installation by new Premium package? Thank you again
Lukas