Somethings wrong with my account. Whenever I try to load the game, it says that my ID is already in use.
My account has many problems...

Log off any other browser your Account might be logged into... That should help

If that doesn't work, try waiting for 2 hours to a day.

Its a common glitch. If you wait it out it should fix itself

Very common glitch I had it in 2010 and I got it again like a month ago and I was like O_o halp
But its really common here are tips
DO NOT TRY TO GET ON when it says id in glitch
Log off for like 3 hours and do something else or leave it alone for 12 hours or so and it will be reset and you can go on again.
If you try to get on its just worse