(It may not take that long
) Yes the above is right. You create a level 1 account and set up an ID on it and password, but don't play it. You can as an interim measure invite yourself (with your original game ID) so that you can leave a message on your other wall explaining your absence. That invite expires in 7 days, but you will be fixed and back to your original kingdom by then.
They need more info to verify who you are and the questions above are standard ones they ask everyone. (Been there!)
As soon as you get your original game back then set up your new password which you can find under the FAQ menu item. Let us know how you get on... Always love a happy ending!