New owner can't connect

I just received my Nonda today.I downloaded the app from the bar code.
I tried to hook up the Nonda to my truck and I can’t get it connected. I am paired with ODBUII in Blue tooth. When I go to the Health Monitor Lite it shows a mac address and asks to check the Bluetooth firmware version. When I hit check it says I have to connect to the device to check the firmware. But it shows I am paired in the Bluetooth settings, HELP Please