Not wise breathing life into a topic that is almost 7 years and one that disturbs you in this way.

Use the - Reporting Possible False Positive File or Website - https://www.avast.com/false-positive-file-form.php form. This goes directly to the Avast Virus labs.

Lets not start using threats, to get a response.

I have no problem accessing HBOmax.com (other than not being in the USA) but then you don’t give any details of the alert URL, etc.
A screenshot of the alert window including the expanded More Details section would help.