Trying to connect to community on another server, but 'not found'

I'm new to lemmy.

When I search for !loseit@discuss.tchncs.de I get a No results. error. It does exist. Other discuss.tchncs.de communities come up when I search just that string.

Is it something I'm doing wrong?

EDIT: Working now. It seems it just needs time to reach out and do things. Not an intuitive experience at all -- feels broken -- but it eventually does function.