Bluetooth RFCOMM on Jetson Nano

I have manged to enable RFCOMM by following:

https://devtalk.nvidia.com/default/topic/1063435/jetson-nano/how-to-enable-serial-port-profile-for-the-bluetooth-service-of-jetson-nano/
and https://devtalk.nvidia.com/default/topic/1062873/jetson-nano/jetson-nano-bluetooth-issue-rfcomm-tty-support-not-available/

My goal is to send commands via and android app such as BT Terminal to the Nano running a python client such as:

http://blog.kevindoran.co/bluetooth-programming-with-python-3/

To this point, I can pair the android device and rfcomm does exist, when I attempt to connect via android (I have tried multiple apps) I always get error 507, Unable to connect is device turned on.

So far, I can’t find the missing piece - there are lots of RaspberryPi discussions I have looked at, so far nothing helps with my message.

Ideas appreciated!

Scott