Earlier today, I was using my computer; but for some reason, Adblock wasn't working on YouTube, even though it was working on other sites. Fearing that this might've happened because of an unidentified program I tried to install earlier tonight (I say that because Avast One warned me that this program was suspicious, and automatically scanned it for potential malware), I did a system restore to a restore point created two days earlier. The restore was successful, but I had to reinstall Avast! Secure Browser because it wouldn't open. But once I reinstalled it, the problem still persisted, and now Adblock might be broken entirely, for the number of ads being blocked won't show up. I've attached a screenshot to back up this claim.
Is there any way to fix this issue?