Rated 3 out of 5 stars

Από τον/την LilYoda στις Απρίλ. 24, 2016 · μόνιμος σύνδεσμος

Apparently, the add-on needs to be "verified". Firefox complains that it will be disabled after next restart. No idea why?
It's a pity, since it's a must-have addon for users that use several languages :(