A: When you purchase a plugin from Oxwall Store you are granted license key for it. When there's a plugin update available you will be asked for your license key when upgrading. That IP address will be remembered from the first update on and the plugin will refuse to be updated from other IP addresses with the same license key.

Also, please note, any sharing of sensitive information about items you purchased at Oxwall Store disrupts OSCL p. 4.2