I and many others have switched from Adblock Plus to uBlock Origin. The latter seems to run just about everywhere (including Waterfox). I use uBlock Origin "out of the box" without so much as an option tweak and it does the job. With a mouse click, it will pop up a list of the domains it's allowing and blocking in the web page being viewed.
thnaKs I’ll give that a look- but that would still be a ‘legacy app’ that firefox will be doing away with right?