Can't activate Mac Pro Edition Upgrade

Have license for two devices: Mac Mini and Macbook Pro.
Bought new Macbook Pro, shut down old. Transferred everything to new. Parallels wants license key, which I have, but it won't allow me to enter it.
What gives?

 

Oops my bad. I thought the key was supposed to go into the white box with xxxx-xxxxx-xxxxx. I accidentally clicked on the message below and the window popped up for the key. I suggest the site be a bit more clear that you have to click that spot to enter your key. Better yet, why not just have a box there ready for the key? Sometimes designers get way too cute ...

 

Hi Kenneth, we take this as a feedback and will pass this to the concern team. Thanks!