Do you use UAC.EXE to run the game ? If you do you need to use SkylordsRebornUpdater.exe to play now. I had the same problem and i was using UAC.EXE yesterday but the other one fixed it for me.
You need to put the updater inside it , then run with UAC.EXE.
And if it still doesn't work , then you gotta wait till the tests are over and the game gets released.
Its not just ''tests'' its a STRESS test. Whatever they are doing its good. Im sure they will learn alot of things of this test. Just be thankfull that you can be a part of the test.
Hey , i just noticed something. There are some heavy FPS Drops in the forge. Everyone is experiencing this in the chat.
Edit : I see there are more people connected then normal and its way easier to get in the forge.