1. In AUX mode press the "D" button for 10 seconds to reset the speaker.
2. Turn off the speaker and turn your Bluetooth device's Bluetooth off and then on again.
3. Clear all the pairing records on your Bluetooth device.
4. Restart your speaker and reconnect it with your Bluetooth device.

Make sure you have selected "Soundcore Rave" from the list of available devices.
If you still can't locate the correct "Soundcore Rave" try the following steps:
- Try upgrading the Bluetooth driver of your Bluetooth device.
- Try updating the Soundcore Rave firmware via this link: https://www.soundcore.com/update-firmware
- Try pairing your speaker with a different Bluetooth device to see if it works properly.