- by Firefox user 14143047, 10 months agoRated 5 out of 5I like the add-on for allowing to conveniently add literature to the Citavi database.
Recently I encountered that the AddOn slows down a particular website: Threema Web (https://web.threema.ch).
Probably you should investigate the issue. Firefox prompts the user to "temporarily disable" the addon for this website. After doing that, Threema Web works again.