There may be different reasons for this:
1. You are not logged in to DesignSpark PCB Pro as the licence holder: If you are trying to borrow the licence from your colleague (the current licence holder), ask them to login with their DesignSpark account on your copy of the software and re-enter the product key.
2. You may have previously activated the key with a different DesignSpark account: Please login to the software again with your original DesignSpark account. If you cannot recall that account and are the licence holder, contact us with your name, order id and first 6 characters of the product key.
Who is the licence holder?
The product key is locked to the first DesignSpark account and computer that activates it, and this DesignSpark account is called the 'licence holder'. This prevents misuse in case the licence email is lost.