If you're unable to login to the Mixmate app on the tablet, the first step of troubleshooting is to ensure the tablet is connected to the internet. Once you are connected and login, you do not need to remain on an internet connection to run your Mixmate system.
If you are connected to the internet and still unable to login, try reseting your password with the 'Forgot Password' link/function on via web browser intersect.mixmate.com