I've used this extension since it came out. I exclusively use old.reddit, because the new Reddit is god awful. The best feature is the ability to remove spam users and subreddits from the front page, but recently that has stopped working. I keep getting the error, "user not found" and "error loading subreddit info." I guess this is the push I need to stop using Reddit all together.

it does nothing. i can't even see the settings. the icon is grey

Reddit is an utterly useless cluttered mess without this.

Completely breaks both old and new reddit. Can't open images or videos and can't open links in new tab. Don't know what else it might break but I uninstalled it before I could find out.