A few days ago I tried to connect through BYOD and iPad with the new iPad OS, but it wasn't possible to complete the task, the reason was that the new iPadOS can't open files to AirOS, so the agent to run the BYOD process could not to be open and start the onboarding process.
Anyone know how to handle this, we authenticate the iPad through MAB for the moment.
Could you give us more details like the exact error message, screenshots, etc.? On iOS 12.x and later the OTA provisioning does not automatically prompt to install the certificates or profiles if that is the issue you are running into.
From the ISE compatibility page:
If you are using Apple iOS 12.2 or later version, you must manually install the downloaded Certificate/Profile. To do this, chooseSettings > General > Profilein the Apple iOS device and ClickInstall
Also, ensure that you have the latest supported OS updates from Administration->System->Settings, Posture->Updates.