Firefox extension "unreputable" -- false positive?

Hello, why does Avast tell users of my Firefox extension that it is “unreputable”, that you strongly recommend that it be removed, and that doing so will improve their browsing experience.

Is there a suggested point of contact at Avast to resolve this issue?

In case relevant, VirusTotal analysis of the XPI file:

https://www.virustotal.com/gui/file/3566669db105050bef263140d764b8f1c16a03bd93cee05f97efabac0e2041d5/detection