Huawei plus20 can't connect to the square dance speakers while Pingo's cell phone connects to it

It's because the communication protocol between the two is incompatible. You can try the following methods:

1, Disable and re-enable the Bluetooth function on Huawei Plus20.

2. If other devices are already connected, disconnect them and then try to connect the Square Dance Speaker again.

3. Make sure the Square Dance Speaker is turned on and in detectable mode.

4. Try to re-pair the Square Dance Speaker to the Huawei Plus20.

5. Update the system software and Bluetooth driver of Huawei Plus20.