It's been months that I have been using it on Firefox, it's TERRIBLE. It keeps crashing, not working even for a second before firefox complains about it. And I am a paid member, so...I can't... *screaming, tearing hair out*

slows down the browser. Almost 90% of the features advertised are behind the paywalls. Rather would use grammarly.

The lag while typing makes it unusable. Also inclusive language is not grammar.

Add-on ignores its settings and runs on sites that are marked as disabled. If you want privacy you have to completely disable it.

Free account is very limited. 500 word count limit.