Rated 4 out of 5 stars

per Mark B el jul. 21, 2018 ·

Can we get a version that's compatible with FF 61.0.1 ???

This review is for a previous version of the add-on (1.9). 

per Realraven (Axel Grude) (desenvolupador) a jul. 21, 2018 ·

Sorry but Mozilla closed the door to this type of modification. You can't do this with Web extensions. You're best bet is switching to Waterfox like I did.

The extension was working until Firefox 57 then they decided to blow up legacy extensions and close many possibilities for us Addons developers.