Hello, had the same problem with a Cardo Scala Rider Freecom 2 Duo communication system, according to support the Bluetooth version must match, according to support it is not downward compatible! In my case, the communication system is too old!

Bluetooth doesn't work at all for me.

Hello I use soundcore life dot 2 in ear headphones, in the menu Bluetooth on, search device. Could be paired without any problems