Have been using it perfectly for years but just now suddenly it stops working

Currently: Adblocker for Youtube is working, if not, first do an uninstall and a re-install, along with a temp. deactivation of enhancer f. ytube, and test it. (comment from region: Germany) / Remember Ytube can attack adblockers with a geo-selective strategy - give feedback to developers if that happens!

Turns out Ublock Origin was the issue. Currently paired with Tampermonkey w/ no ads or issues on Youtube!

Works great. When/if is stops working just delete all youtube cookies and there you go !

mantab,spektakuler, trust me its works