Activation code problem

Hello, I recently bought a lexicon alpha graphic card and with it came the cubase LE5, when activating my product, behind the driver’s cd card gave me the activation code of the cubase as follows
xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
I put this code on the web but it tells me that it is incorrect or that it does not exist. If anyone helps me, thank you very much.

Hi,

Be careful with 0 (zero) and O (out) letters, please.

Contact official Steinberg support, please.