Following PF accounts from elsewhere

I assume we should be able to follow PieFed accounts from other fediverse servers? Our user here would be @<profile>@piefed.social ?

I tried following me elsewhere and could not. Maybe that's not available yet, or is limited.

Anyone else tried following?

I tried following from various Mastodon, Firefish, IceSchrimp, Sharkey, Misskey accounts. All never complete a follow.

I will submit as a bug if I know others have the same issue. Perhaps it is me being stupid.

thanks