I just closed registrations @ ClimateJustice.global, but not really.
Any activist group that wants to join, will receive an invite link from me.
Individuals are redirected to https://ClimateJustice.social
I'm not sure it's the best way, but I think it's better than it was before. Until now lots of people tried to join .global and were sent an email by me to join .social instead, but never reacted to it.