normally i love this extension, as it adds a lot of useful things that i find very helpful. however, it hasn't been working recently and i can't give it more than three stars because of that.

when this extension actually works its a 5/5 star extention but it just. doesn't work

It works well, but don't log in to track your statistics like bookmarked, kudos'ed, etc.
In it's current form, you will receive reading history of other people, not just fics you've read. This gave me a heart attack and caused a whole lot of anxiety, but you can just delete it and then reinstall it. (There's no convenient log out of your AO3 button once you've logged in with the tool).

Would be 5/5 if this bug was resolved, tbh.

all good features but rate-limits the site when used