Seemed to stop working Rated 1 out of 5 stars

I was using the Right click menu to highlight text in different colours and it was great. It keeps the highlighting regardless of whether you refresh which is what I needed. But now it no longer works and the right click menu has vanished entirely. I'm using FF 52.0.2.

This review is for a previous version of the add-on (4.0.11120600.1-signed.1-signed).