The way they migrated calckey.social to firefish.social may have broken federation with Friendica for existing (but now suddenly renamed) accounts. Trying again. At least new accounts work fine. They did send out migration messages for the old accounts, but that doesn't work on Friendica, so I have to (try to) re-follow manually.
Also when checking on the site itself I wish I'd knew how to set the UI to English rather than (presumably) Japanese.