Why can't I pair my Buds Pro earbuds with the Nothing X app on my iPhone after I reset them to factory settings?

This is due to a problem with the iOS platform. If you encounter this problem, please try the following steps to resolve the issue:
1. Open the Settings app on your phone, go to the Bluetooth interface, and check if the earbuds are listed among the connected devices. If they are, tap the "i" button next to the earbuds in the list, and then click Ignore this device.
2. Open the Nothing X app and try to pair the earbuds again.