To any who want to play and are stuck at the loading screen, it seems only Cloudsdale is loading and functioning properly for me and a few of my friends. If you wanna play then try and log in as a Pegasus.
Sorry to any who cannot log in, but just be patient and you'll get in eventually. I haven't been booted out of the game at all and have had a solid half hour of play time. It's just a hit and miss thing.
Best of luck though.