Suggested Quick Fixes: Reseat the USB cable or wireless USB receiver. Why isn’t my cyberpower mouse lighting up? If you want to you can also put electrical tape (it won’t break I promise) to make it easier to drag.
Just set the debounce time on and set the double-click time to 1 in Roccat Swarn (the Roccat software), and you should be free to go. The lights on the mouse always stay on and the keyboard lights do as well. Just hold the bottom round button down for a couple seconds and all the lights will shut off. Locate the buttons on the top of the tower.