To use this Crestron touch screen, first make sure it's properly connected to the power source. When you encounter a problem like being unable to access the setup menu for a factory reset due to the login block, try restarting the device. If the issue persists, contact Crestron support. For maintenance, keep the screen clean with a soft, dry cloth. Avoid using harsh chemicals as they may damage the screen. Also, don't expose the device to extreme temperatures or humidity.