SAP Solution Manager 7.2 CAL has status "Expired"

Hello,

I like to make use of the CAL service SAP Solution Manager 7.2 Test drive Content Activation of Customer's Own Documentation.

But the status of the Service is Expired, it seems that the 90 day trail is expired, but I never used this service before.

How can this status be resetted so I can use it.

Kind regards,

Evert Schuiteman