Razer Deathadder V2 pro connection problems

Hello, i have Deathadder V2 Pro, my original dongle broke and it does not work anymore. Connects and disconnects to pc, even to other computers. I bought a new dongle, for same mouse, literally the same dongle, it does register it so dongle is alright, but the mouse does not want to connect to it and work wirelessly. What could be the problem? I've tried everything, updating the firmware, removing the device from razer and from my pc, non of that worked.