activation key

I purchased an activation key through onthehub at my university and I was given an activation key. Installed parallels desktop 13 for mac and put in the activation key, and it keeps saying "this key cannot be used to activate Parallels Desktop" What did I do wrong, and what can I do to fix this?

Hello, I just purchased a new MacBook Pro and I am unable to activate using my existing license key. After selecting "Activate on this Mac" I receive the error "This license key is associated with another Parallels account. Please sign in using this account and try again." I am unaware of any...

I purchased a key for Parallels Desktop 12 and the activation key is marked with a green check mark, however when I activate it the following message appear: This product could not be activated because your activation key is invalid for this version of Parallels Desktop. How can this issue be...

Hello, I've been using the trial version of Parallels for school on a daily basis. When my trial expired today I purchased the full Student version. When prompted for my key, I received a notification saying what I used was an "upgrade key", and my initial service code was required. I no longer...