Left and Right Click Are Not Working

If using the mouse in wireless mode, make sure the battery is sufficiently charged. If the battery won't hold a charge, replace it.

If using in wired mode, try plugging the mouse into a different port. If you're using the wireless mode, try plugging the receiver into a different port.

Try using some compressed air or a microfiber cloth with a small amount of rubbing alcohol to clean the top of the left/right mouse buttons. You could try dis assembling the mouse to better access the bottom of the mouse buttons for cleaning.

Sometimes the ASUS Armoury software not being up to date can cause issues. Try uninstalling and reinstalling the Armoury software.

In some cases, a firmware reset may be required. To perform this, first plug in the mouse while in wired mode. Next, unplug the mouse, then hold down left click, scroll wheel, and right click buttons. Reseat the cable while holding these buttons down. After about 20-30 seconds, you should see a popup to reset the firmware. Follow the on-screen instructions to complete the update.

Consult this guide for a detailed step by step process on how to replace the switches inside of the mouse.