Partially stopped working on all of my devices about 1-2 weeks ago. Settings do not show up when clicked on the icon in toolbar. Speed setting only gets applied if set to 2x. Doesn't work with 1.25x or 1.5x. Quality settings is also broken. Video Subtitles set to "on" doesn't seem to work either. Settings used to apply immediately after the change, now I need to refresh the page.
It still works just fine with 109.0.0 version. I had to go to the add-on page, click on "See all versions" and install it. In settings of the addon I disable the update feature to keep it at this version.
Keeping 2 stars until a fixed new version gets released.