I just purchased Nine application from Google Play. How can I get a license key?
If you purchase Nine from Google play, Nine complies with the Google play payment policy.
If you download Nine with the purchased Google account, you can use Nine on multiple devices without additional purchase.
Thus, the license key is not provided.
If your Nine is not changed to Licensed right after purchaing via in-app billing, please reboot your device and then check your Nine again.