Question Xiaomi Yeelight Ceiling Lamp

I go to Homey App - Devices - Add a device - Xiaomi Mi Home App - Yeelights - Install. At the last step I 5 time turn off and on the ceiling lamp. The ceiling lamp is blinking and no positiv result. “No new devices have been found”
Can you please explain how to do this correctly?

I was looking for how to do this for two days, but found nothing.