Authentication code bug?

Yesterday my brother and I had the idea to use the account authenticator to be able to sell our gold for coins in lordaeron since we stopped playing it, the problem is today that tells us this
"Dear stalin14,

We have received a request to access your Warmane account from a new location.

If you did not try this action, please change your password immediately.

To complete this process, enter the following code into the authorization box to begin playing: 4446811312464 (example) "
* We use the code but it always tells us this
"" The code given is incorrect, wait a few seconds before trying again " and again sends us an email with a new code that when placing does not work,
Please observe my case, sorry for my english

The problem is inside the game when I want to login, they ask me the same code with which I could enter the page of warmane when using it I get error despite using the same code

same problem here too.. :(
can anyone help us here?

It is not the same code you got for the homepage, when you get the message login in to the client you get a new email and code sent to you for that.