Cannot connect to my large realm after latest update

I cannot connect to my large creative realm (2.6 GB) after the latest update. After a few minutes of the "Joining Realm... This may take a few seconds" screen, I get a message that says "Disconnected from server." All of the players in my community cannot connect to the realm, either. The connection issue began specifically after the marketplace issues yesterday. 

I also have a smaller SMP realm, and I can connect to it (albeit, the time it takes to connect is noticeably slower now). 

I have tried downloading and reuploading a copy of the world into the second realm slot, and the issue persists.