[To prior review] Thanks that's really useful feedback. I think I've found the problem as to why so many extensions aren't working on mobile and I've implemented a workaround. If you try again with version 1.8 it should work on Android now.

Unfortunately I can't fix keyboard shortcuts not working on Android because Firefox for Android does not support keyboard shortcuts. In the event Firefox for Android is updated to support keyboard shortcuts v1.8 should magically work with them on Android. I can't do anything else unfortunately because the APIs just aren't there :/