First, my version of AVAST with Secure Browser is:
20.3.2405 (build 20.3.5200.575)
Second, the ad blocker built into the AVAST Secure Browser works for most sites, but, for Barrons.com, it shows up as green for a second indicating it is attempting to block ads, but, then, ads begin showing up and green turns to gray.
When I hover over the grayed out upper right AD it says:
AVAST Adblock (off)
Has Access to this site
In my Security and Privacy Center Adblock is shown green as ON