Verify NFC is enabled in Android settings: go to Settings > Wireless & Networks > More, tap on the NFC switch to activate it. Then go back to Golf Pad and try scanning a tag again.
If you are unable to scan tags still, please send a message to our support team and we'll work with you to get the issue resolved.
If you see an error message of "invalid tag", please follow these steps: For us to resolve and activate the tag for you, please download this app (NFC Tools in Google Play) to your phone. Once you have, open the app, place the tag near your phone. The NFC tools app will then read the info, including the UID of the tag. Send the UID to us and we'll activate it for you.