Avast no longer recognize me as its administrator

Dear anyone who reads this, since I can’t seem to contact Avast directly about anything:

I have Avast Premier, Secure Online and Cleanup. However, I can’t use any of it properly since Avast claims I am “not authorized” and should contact the system administrator (which would be me). I can’t even use Safe Zone. Everything worked fine up until a few months ago. If anyone has any usefult thoughts on how to fix this I would appreciate them. After all, there’s no point in using software that does not recognize the administrator as the administrator.

Best regards,
Peter

Contact Avast via this link: https://support.avast.com/en-us/contact/enter/paid_pc