Nov 15, 2021, 9:23 PST
Thanks for providing the invite link!
It’s also showing up as expired for me here. Invitations can be set to expire (there are expiration options such as 30 mins, 6 hours, 1 day) and/or have a limited number of uses.
Could you ask one of the moderators to go to Server Settings > Invites and have them delete all previous invites they’ve created? They’ll then be able to generate a new link by clicking the ‘+’ icon next to the channel, or by heading to Server Settings > Invites > Create one.