Be sure to have identified each DDO acct (if you have more than 1) you have on your Turbine acct page and choose the correct one to apply the MOTU pre-order activation key to.

I *Almost* applied the key to my premium DDO acct instead of my main VIP acct because I had not Changed the Acct Nickname and started to assume the VIP was the first in the list. SOOO I double checked.