Browser-Add-on with bad reputation

Hi, I’m the product manager of a browser plugin called TRAVIC-Sign. This plugin communicates with a card-reader connected with the PC in order to create a secure signature to a request. A customer told us, that “Avast Free Antivirus” determined this plugin as an add-on with bad reputation. Now I’m looking for a description which functionality of our plugin leads your software to that categorization. Could anybody help me?

Support: Avast file whitelisting
https://www.avast.com/faq.php?article=AVKB229#artTitle

Support: Avast Clean Guidelines
https://www.avast.com/faq.php?article=AVKB228#artTitle

support and FAQ https://support.avast.com/

thx

This problem is not solved yet.

Is there any option to whitelist this addon inside avast free ??

Source:
https://www.santander.de/privatkunden/service-kontakt/information/online-banking-app/online-banking/plugin.html

Reported to Avast. Let’s see if that helps.

I dont think avast sw gives that bad reputation.
Users of Firefox can do that:

https://addons.mozilla.org/de/review_guide

But I cant find any thread about Travic-Sign ;-(