Hello,
I experience the same problem. So far, my ZF9 cannot connect to the 2019 BMW X5 and one medical device (2022, brand new device). Both devices can be discovered, but immediately after pairing, the connection is lost, and the device is forgotten.
On the other hand, I have a handful of other devices that can be paired without any observable problems, including the 2019 BMW 440.
I couldn't find any reasonable pattern, what type of devices couldn't be connected (for example cars, audio, old/new, etc.)
Any ideas?
Thanks!