Bluetooth not pairing - S2120

I cannot pair via bluetooth to the S2120 using the SenseCap Mate Android app.

I have tried two S2120s and three phones, all with the same result.

The phones can find the S2120s via bluetooth, but cannot pair. I have tried 000000, 1234 and 0000 pairing codes.

Any advice on how to get it working?

Hi there, Chloe from the SenseCAP Support Team here. I sincerely apologize for any inconvenience our products have caused. Could you please provide a video demonstrating the usage and send it to our technical support email at sensecap@seeed.cc? Our support team will be more than happy to assist you with your question. Thank you for your understanding and cooperation.