Unable to connect Philips hue bluetooth bulb

I am not able to connect Phillips hue bluetooth bulb through my ios device(mobile). I have followed all the instruction which says power off for 10 seconds and on it.In the starting it will show you pair hue bulb but it never gets paired.

Could you let me know what type of light bulb you are trying to connect? Does Hue Essentials show any error messages?

Could you share your crash identifier? Crash identifier