It sounds like it stopped working when FB declared war on adblockers. It has since become a cat and mouse game. UBlock Origin + relevant lists are likely still

It sounds like it stopped working when FB declared war on adblockers. It has since become a cat and mouse game. UBlock Origin + relevant lists are likely still your best bet. I can't say for certain how effective they are as I don't use FB but in general the uBlock Origin lists have never taken too long to update, especially with more popular sites.