I am having issues too with Call & SMS Filter from Avast.

I DO NOT have SMS filter turned on, but Avast keeps asking me if it should allow SMS messages come through (via Google Voice text)

However I do have Call Filter Enable, and I think it’s working since I haven’t been bothered by phone calls I didn’t care for.

So for some reason even though I have SMS filtered OFF, Avast still ask me if it should allow.