nrw.social is a mastodon instance, which does not create group actors. Lemmy, Mbin and PieFed do. In Lemmy terms, a group actor is called a "Community". Every lemmy instance lists their communities at /communities, e.g. https://lemmy.world/communities.
Try putting "https://lemmy.world/c/technology" into that field and see what happens.
nrw.social is a mastodon instance, which does not create group actors. Lemmy, Mbin and PieFed do. In Lemmy terms, a group actor is called a "Community". Every lemmy instance lists their communities at /communities, e.g. https://lemmy.world/communities.
Try putting "https://lemmy.world/c/technology" into that field and see what happens.