Register your Q-Pads in the Qvin app before use. Once you have the app open, tap the Q-Pad icon on the bottom of the screen and then tap "Link your Q-Pads". The app will walk you through registering the kit.
You will be asked to scan the QR code of Q-Pad 1, which is found inside the kit on the front of the Q-Pad 1 package. You can also enter the Q-Pad ID manually.
You only have to register Q-Pad 1. Q-Pad 2 will be automatically linked to your account when you register Q-Pad 1.