What's happened for you there isn't a problem for screenshots to really fix - it's whatever frontend you're using not giving lemmy's backend enough time to fetch a remote community. This happens loads - I even made a little video about it the other day: https://lemmy.dbzer0.com/post/13703060

When you clicked on !tails@lemmon.website, it did actually go through to dbzer0, and Voyager has no trouble with the community once it's though. A little ironically perhaps, but here's a hastily combined screenshot showing it at dbzer0 and on Voyager:

edit: and the link to the post of course: https://lemmy.dbzer0.com/post/13850191