Domain (and its all subdomains) are blocked

Hi. Upon accessing my client’s website, Avast alerts about a virus. After scanning the site, all files deemed harmful were removed. Unfortunately, the virus alert from Avast remains. The entire domain and all its subdomains are blocked. I set up a completely new site on a different server (there are no shared files), and it also has a virus alert (I am 100% sure that there is no virus here). How can I submit a request for re-verification of the domain?

There are sites that can also check a site link and or file upload.

If there are no hits or very few hits on Virus Total and you address any other issues if reported then:
Possible False Positive - New location to report both a False Positive and or a False Negative (for File or URL) - Choose Your Sample Submission Type | Avast

You won’t get a direct response but the site should be checked within 48 hours if found to be clear then it will be removed.