Smart dimmer problem with c550 celling light

I have got yeelight Arwen c550 celling light and yeelight cyristal light but i can’t pair. Why :cry::cry::cry:
Mu dimmer model is YDQA0120001WTGL
Wireless smart dimmer

Please provide a picture to let me know what kind of dimmer switch you have. The dimmer switch must be started pairing within one minute after the ceiling lamp is powered on, and should be as close to the ceiling lamp as possible