Don't worry - there was an update to YouTube UI, it breaks the extension for some users, the fix is already submitted to be reviewed by mozilla, it usually takes around 24 hours to be accepted. As soon as you see that the version 188.8.131.52 is out - everything should work again
- 5 段階中 2 の評価Devin Rozsas によるレビュー (23日前)The number shown is an estimate, not the actual number of dislikes. Furthermore, the methodology to get that estimate is a bit questionable due to sample-bias.
Furthermore, the extension stops working every month or two.