Avast warning me of Browser plug in

I use a gaming site called GOG.com and downloaded a plug in called Barefoot Essentials to enhance the forum experience. I then had a warning from Avast about that plug in’s reputation, so I allowed Avast to remove it and I then removed all trace of it from my system to be sure. However, I now get repeated warnings about this same plug in and duly allow Avast to remove it each time, but keep getting the warnings!?! Any ideas as to what’s occurring? Thanks.

https://forum.avast.com/index.php?board=54.0