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My Android device is showing an "authentication problem" when trying to connect to CFX cooler. What can I do?

This can occur if another device was previously connected to the fridge. Reset to factory settings by using reset function on fridge. Press "SET" 5 times (single compartment models), or 6 times (two compartment models), then press/hold the "+" button for at least 5 seconds. "rES" will appear in display and blink several times before returning to normal display.