Which mobile app are you using - the SmartThings “Classic” app or the new Samsung Connect app? The “classic” app should be when pairing Xiaomi / Aqara devices.
If you are using the “classic” app, then there’s a way to manually add the device with information from the zbjoin event. I’d need to see a screenshot of the event details to walk you through it.
Hi, and welcome! GitHub integration is accomplished when logged into your hub’s Groovy IDE (Integrated Development Environment). The IDE is a webpage that you log into, either from a computer or mobile device, rather than an app.
I’d suggest reading through this FAQ:
And SmartThings’s official documentation on GitHub integration is here.