I feel like they have to restart their server. I noticed there's a lot less people in it than hust like an hour ago, there was almost double as much. Multiple people not being able to join around the same time, is not a coincidence.
I can join other servers, but not this one. I was connected to it just earlier but got disconnected for being afk, I was making a billboard design in Photoshop
I also noticed I can't see the player list, only how many players are connected.