It's currently not being updated and still with bugs for something that should be simple. the github page has more than 30 issues open for many months now.

Automation based on the system theme doesn't work (FF 149 Windows). I don't understand how this can be "recommended"

Firefox 149 on macOS Tahoe 26.4 - Doesn't work - Tried automatic settings, tried set to system settings, tried manual setting...all the same...nice idea but 👎🏻

it doesnt work

Zmiana po motywie systemu nie działa w ogóle, a w przypadku ustawienia konkretnych godzin działa tylko czasami. Nie wiem o co chodzi, że niedziałające rozszerzenie jest polecane przez Mozillę (Nie wspominając że ta funkcja powinna być w samym Firefoksie)

Turned dark mode on at the set time but didn't automatically turn it off.

doesn't auto work

works once, then stops.

doesn't actually work

Doesn't work. Firefox 129 & Sonoma 14.6

Doesn't work. Many issues open on the github page about this. This isn't maintained.

This would not work on my browser, I would not recommend at all!!

This stopped working on latest Firefox version. Please fix it ASAP.
ISSUE: System theme cannot be detected by the extension.

This recently stopped working on newest Firefox