Hi,
I purchased the UR22 from a distributor in Australia and have been using an older version of Cubase that I never registered.
I finally decided to download the included Cubase AI software and when I finally figured out how to do so, I realised I’d lost the paper that had the code on it.
What details can I provide in order to get the code? Serial number etc? Purchase receipt? I can provide all this things.
I am wanting to use this more recent version to upgrade to Cubase 7.5. 
Cheers!