Experiencing the same issue as everyone else: the add-on simply says "current version: undefined".

There also hasn't been any activity on the linked GitLab for a year; seems like this add-on is abandonware.

Works very well. It only has permission to librewolf.net which meens you need to visit librewolf.net to get notified if there is an update or not. Otherwise you se "current version: undefined"

it worked for awhile, now it just says current version undefined. i been waiting for a few days on a fix but nothing yet. (Update) Ive now been waiting Months With no fix. Its broken and does nothing at all.

Something happened with add on. Getting a "current version: undefined" message

Bringt keine Update Meldung seit Monaten "Status aktuelle Version unbekannt" ... Die warum aus dem Store verschwundene Version und auf Github geschlossene Version von "defkev" funktioniert hingegen immer noch perfekt.