Cannot Purchase a Realm

I know that this issue has already been brought up, but for some unknown reason, has been labeled as RESOLVED.  When I try to purchase a realm, it tells me that we cannot connect to the Marketplace or that I should check my connection. My connection is fine and I can connect to the Marketplace when I go to it directly from the Menu.

I'm only trying to buy a realm because I was unable to upload a different world onto my older realm, which I don't think I should have to do and is a different issue (I encourage you to vote on REALMS-474) but has been prevalent for more than a year without solution.