Hi James
I think i have found the issue. It might be that the controllers don’t work with the onboard bluetooth controller.
Please have a look at these:
Retropie Freezing on Bluetooth Security Selection with 8bitdo Controller : RetroPie (reddit.com)
Bluetooth RetroPie Setup Script Issues - RetroPie Forum
I don’t have a USB Bluetooth adapter to try this with so I dont know if it’s the fix or not, but these two links are describing my problem perfectly.
These were purchased together as your Ultimate Retro Game Console kit, are you able to test and let me know if you can get this working?
Thanks Richard