I have the same problem. I'm not a regular Discord user, today I checked Discord and also got a message I was banned. hopefully I'm still in with the same secret santa as I'm not interested in starting all over for a new Santa.
discord mods told me I can rejoin but I'll get a new partner.you probably can rejoin, but I don't know if your new partner request be as the same as the last one, I didn't rejoin btw, and I'm halfway through my game. I'll just rejoin next December.
