Pairing your unique hardware serial number to the software. How to Get Your Initial Username and Password
Here is a reference for typical costs:
Unlike some devices that come with factory-set credentials like "admin/admin" or "user/password", Xdiag Pro 3 has no such default login. Each user's account is created either by the seller at the time of purchase or by you during the initial setup process. If you buy the software from an official reseller, you will typically receive a username and password along with the APK file and activation instructions. Xdiag Pro 3 Username And Password