When I opened EGHH as an IFATC on Expert about 20 minutes ago I noticed limited ATIS functionality - visibility, temp and altimeter all missing.
I also noticed that EGHH has not shown up on the status page with all the other IFATC airports open on the server.
I went to IFATC.org and I’m showing up as open there.
Building off on that, if you don’t have a stable connection, it may not show you as open. When my wifi was acting up in the past, I was open but I wasn’t necessarily connected to the live server so people couldn’t see me and my airport didn’t show up