Can't pair the Airpods (Pro) with Avantree Relay

1. Please turn off the bluetooth on your iPhone.

2. Make sure get both the Relay and the Airpods into pairing mode.

Slide the Relay's switch to the "ON" position. For first time use, the Relay will enter PAIRING mode automatically. For subsequent use, put your Relay into PAIRING mode by pressing & holding the MFB until the LED flashes RED & BLUE alternately.

And here is How to get the Airpods/Airpods pro into pairing mode 

3. Keep them within distance for fews seconds, they should pair with each other.

If still can't get them pair, please try to factory reset both the Relay and the Airpods(Pro) and then try to pair again.

How to Factory Reset/Clear Pairing History of the Relay?

How to reset your AirPods/AirPods Pro?