does this not work on Android?

[CarmenB19]

I used to have this extension and loved it. A few months ago (I think after updating firefox) it said it's not available anymore. Now it looks like it is available but the "add to firefox" button is greyed out for me...

[magnum0134]

Maybe the extension are not made for firefox android but this can be remedied when the author republish the addon for the new firefox android. Therefore we can only wait as the auther is quite busy

[jd1900]

It would be great to have Android support.

[braham-snyder]

You might want to just thumbs-up the OP.

If you haven't ran into it: GitHub's issue tracker can sort issues by the number of thumbs up on the OP. (Granted it's not perfect -- see eg isaacs/github#605.)

[Pawloland]

I used to have this extension and loved it. A few months ago (I think after updating firefox) it said it's not available anymore. Now it looks like it is available but the "add to firefox" button is greyed out for me...

I think it should work on android just fine. The problem is what version of firefox you are using. IIRC only firefox nightly has support for any extension. Different versions of the mobile browser support just some of them, approved by Mozilla, that are known to function properly. If you want to use it on mobile here is more info on that subject.