Excellent to have and use.

Very buggy, instead of correcting the text it just adds randomly the corrected string.

Too much spam like "Auto-activation filters..." I didn't pay for that

Does not work. After signing into the website and my paid premium account, the add-on indicates that I am not signed in. I tried to get help from customer support but they couldn't fix it.

Great application, but Microsoft seems to remove it after updates. I need to go back in to have it work on emails and such. I still love this app.

Used to be good, but now is constantly advertising "premium" features which were standard. Using LanguageTool now
https://addons.mozilla.org/en-US/firefox/addon/languagetool/

This always corrects My spelling and it is helping me understand how to write more. The only thing i don't like is when rarely I write in another language it wants to correct it. Anyways 10/10 would recomend people who struggle with writing or are learning

I always use this when I write.