Because you're having some bigger server connection problems.
Have you tried simple page refreshes and/or ctrl+F5?
Have you killed all other unnecessary network processes and tried to access your island?
It's obvious TSO servers atm are not working that well, as they should, and it seems like BB has decided it's better to let people get stucked in loading screens than actually fix the problem.
I do very seldom has any bigger server connection problems here on liveserver, but do have from time to time when trying to play on testserver, using my laptop and wifi.