It won't show any posts if you're joining from a remote instance 'cos MBin returns empty outboxes for their magazines, but there's only one post there atm anyways.
Lemmy will probably error when clicking that link, so just wait a bit and refresh.
So this comment has one link, and two paragraphs about how it might not work as expected, but - other than that - yay Fediverse!, I guess, ha ha.