Hi,
I had an issue which the other BLE tools can connect to my BT121 module, but NCF Master Control Panel keeps looping at the connection content page. FYI, it is bonded already. My phone is Nexus 5, and autoConnect Option is not checked. I also found out that Xiaomi is also having this issue of looping in connecting.
Thanks for the help.
Sincerely, Lip Ghee