Took this from the sidebar at newcommunities

[link text](/c/community@instance.com)

This provides a link that should work across instances, but in some cases it won’t

To my knowledge this doesn’t work if a user in your instance hasn’t previously searched for the community

You’re one of today’s lucky 10,000

I’m reading in some other threads that it may be due to the cloudflare DDoS protection in place.