Provide your User ID and Key ID provided at the time of purchase.
If you are on a modern Mac, you may need to upgrade to Guitar Pro 8 for full 64-bit compatibility. 4. Risks of "Free" Keygens and Cracks Guitar Pro 6 Activation Key Offline
: Click the "Offline activation" button instead of the standard "OK". Provide your User ID and Key ID provided
If you own a legitimate GP6 license (you have the original email with a serial number), email support at support@guitar-pro.com . Explain you need an offline activation key because you cannot connect to the internet. Guitar Pro 6 Activation Key Offline