Constantly 90002 in Palace of the Dead

Just as the title says. I keep getting disconnected shortly after starting. I'll re-connect and a few moment later I'll disconnect again. This continues until I've been kicked from the party or the round of Palace is over. Also, I can't even do my solo run, because a disconnection counts as a death. I know it's not my Internet, because I've farmed for the Dogs and spammed dungeon after dungeon to get a few jobs to 70 and I've never had this issue anywhere else. Only Palace of the Dead.

Any information or help would be greatly appreciated!