When I go to reserve my name for tanki x it says that I do not have a linked email address to recieve the code but I do. I don't know what the problem is

I am unable to reserve my nickname, it says I need to link an email with it yet I already have.

As you know the new vulcan has come out and when you begin to shoot the turret will stay shooting in the same direction not caring if your tank is turning or driving and the only way to move it is to use the x z and c keys. I personally turn my tank and I know I'm not the only one, my friends do it, i see other people do it so I think there should be the ability to toggle whether or not the vulcan should stay in the same direction when beginning firing or it turns with your tank. Thanks