In the past, we have used a payment provider called PayPro Global and offered licences via a combination of an unlocker and licence keys. This system has been depreciated since as we found it too cumbersome and unintuitive to use. If you currently hold a PayPro licence, note that it works for up to 10 activations on different devices (a reset device that was previously activated counts as a new activation). We no longer have the ability modify your activations i.e. to reset the licence or add more devices. This means once you've used up the 10 allotted, your licence will expire.