I am new to the forum.
Maybe the question is about re-pairing Hue bulbs without bridge.
I removed 3 hue bulbs from the homey. I want to add these again, but all three are not found. It seems as if they have been removed from the app but are still in the network. Does anyone have this experience and a solution?
To reconnect bulbs you need to reset them. On zigbee this usually is done by turning the light on/off 5-6 times in a row quite fast. When you get it right the bulb will blink or cycle colors. its is now reset and you can readd it. 
It’s also possible with a Hue Dimmer Switch:
