Thanks, I will try this tonight.
I tried again with the UI and it was an exercise in frustration. A scan finally connected and I could see the “Ankar” entry appear with a checkmark next to it. I thought at that point that I was paired. I pressed “Y” to see more details but noticed that “Paired” was set to “no”. When I pressed “A” to go back to the menu, the “Authentication Canceled” pop-up appeared.
I think either the UI interface or the Bluetooth configuration (or both) on the GameShell is not well tested and buggy. I hope that a future update can rectify this. Having a desktop is nice for native development on the GameShell, but not without a keyboard. 