The Prota mobile app uses Bluetooth to scan for nearby devices, so make sure your Raspberry Pi has a Bluetooth dongle. If you are using Raspberry Pi 3 — you can also utilize the built-in Bluetooth feature.
You can also use only the ethernet, but in this case, to access your Prota you will need to find the exact IP address of your Prota and manually type it into a web browser.
Make sure that your phone and Prota are within the 13-15m range.
If you still couldn’t connect to Prota, please see the next page.