Cannot join my realms on PC

Whenever I try to access one of my realms worlds on my pc, the game takes a long time loading before giving me a pop up that says "Unable to connect to realm. Failed attempting to join realm. Try again later."

I was able to make a world download from one. When I try to upload worlds it does the complete upload and then when it tries to open the world, the message pops up and the realm is reverted back to pre upload settings.