Bluetooth is not working

Hi, I'm using bluetooth HC 05 module in my project. But, whenever I send command from app, my bluetooth gets disconnected. But, it is working perfectly in other devices when connected.

Sounds like a problem with the secret app, which is on the secret device, but it could be a problem with the secret code on the similarly secret Arduino. Once you get over your paranoia, and be more forthcoming about what is going on, what you are actually trying to do, and how you are going about it, maybe all will be revealed. Maybe.