Ez block studio

Hey, i am trying to connect the pi crawler with a raspberry pi 4b model via bluetooth for the calibration part.
But on the app, i don’t find the device and i don’t know why.

thank you in advance for your response!

Please follow the steps in the tutorial:
Before searching for the linked device, you need to turn on the WiFi and Bluetooth functions, and then search and connect the device.
The prerequisite is that you need to install our customized ezblock OS image system to the SD card, and insert the SD card into the Raspberry Pi to boot up. Only then can you proceed to connect the device.
The download link for the ezblock OS image system is:Microsoft OneDrive