meshtastic on DFRobot LoraWan ESP32-S3 not working

Has anyone successfully setup meshtastic on the DFRobot LoraWAN ESP32-S3 (https://wiki.dfrobot.com/dfr1195/)? 

I flashed the firmware from the Wiki, using the online Meshtastic flasher, but when I try and connect to the Meshtastic device using the Android Meshtastic App, nothing happens. I can see the device in under bluetooh devices, then I click on and then Pair, but then nothing happens. 

When I connect to the serial port, using https://client.meshtastic.org, it just loads and loads and loads. 

The LCD screen also doesn't show anything.