Cause: Conflict with Razer Synapse, Logitech G Hub, or older mouse drivers. Fix: Uninstall all other mouse software. Open Device Manager > Mice > Uninstall the generic HID driver, then plug the mouse back into a USB 2.0 port (not USB 3.0).
Click any button icon on the screen, then choose: r8 mouse software
The short answer: It is a gray area.
Because the R8 is a mass-produced "white label" product, many third-party resellers bundle adware or browser hijackers into their custom driver installers. Always scan the .zip or .exe with Malwarebytes or Windows Defender before installation. Cause: Conflict with Razer Synapse, Logitech G Hub,
Safe sources:
The R8 software allows you to reprogram all 7 to 10 buttons (depending on the R8 variant). Common remaps include: Cause: Conflict with Razer Synapse