How do you let avast know that Viral attack made Avast's GUI faceless?

My computer kept wanting to scan the disk. I let it do it once, then the computer virus wants to restart computer to destroy it, but… the virus made it so I couldn’t see the avast so I had to uninstall it to take control of my computer.

You can’t install download AVAST product without restarting. I wanted avast again to scan the computer.

My concern was to let AVAST that there is a virus like this out there.

You can report a suspicious/malicious sample (File/Website) here: https://www.avast.com/report-malicious-file.php