i like the simplicity of the graphics, the in-page pop-up, the short defintions and the google-generated content is better than competitors (mirriam webster, for example), HOWEVER, after a few hours of using, it started giving me "sorry, no definition found" for whatever i click on. this has not resolved even after uninstalling and reinstalling the add on, so very sad about this as it is otherwise exactly what i'm looking for.

if the developers see this i can't tell you what triggered the add in to stop working. i made sure dom.webcomponents.shadowdom.enabled was enabled (when it stopped working). I do read a lot of stuff on pocket and reader view so maybe it started after some interaction there? maybe there's a clue in the fact that functionality was not restored even after deleting and reinstalling?

EDIT (after response from developer): YES, you were right about it being a VPN issue. As soon as i switch it off the add-on starts to work again. I have changed my rating to 4/5. i tend to have my vpn on most of the time so using this add on will not be particularly useful to me after all, however, i am aware this will only affect a minority of users.