It is possible that your carrier has instructed Moto to not release the BL unlock code for their devices. All I can suggest is re-running the get unlock data command, triple-checking it, trying again, and then possibly trying on another computer.
In addition, the Moto website is known to be 'glitchy' sometimes, so you might try tomorrow and it could work immediately.
Sorry, this is all the advice I have for you.
Good Luck
EDIT: Also, you probably already know, but it should ONLY be the data, in one string. Remove the [bootloader] text and only have the data itself.