Realm won't work

I'm trying to replace realm with an existing world. Now It won't let me reset, play, close or do anything at all. I just get "failed to join realm. Please try again later." I feel like I've just payed for something that doesn't even work. It's very frustrating. When I try to upload A world I get an error message "failed to find a place to upload your world. Maybe check your internet connection?" My internet is just fine.