It seems to work ok for me, my guess is it's a relay issue, where the key publish failed, the relay dropped your note, or you're using a different set of relays than have the key share. Try adding all the group relays to your personal relay selections (and any relays you might have recently removed), wait a few seconds for that to propagate, then log out and back in and see if it comes through.
Discussion
I have the admin key.. but I still can't access the group.. how do I use the admin key? Should i login nostr with this admin key to change groupsettings? I tried already, but nothing worked for me :(
Sorry, I realized tge button is missing, I'll have an update out soon that will allow you to add it back in on your keys page