Only getting the '+' Symbol on the display

Hi everyone,

I’ve recently received a Precision Pro and I’m having an issue with it. I was setting it up on the app and it couldn’t find my Precision Pro on the first go round after inputting the code. I turned it off from the wall outlet and turned it back on, however I’m only getting the ‘+’ symbol on the bottom right of the display. I’ve tried to press it and holding down on it but nothing happens.

Does anyone know what has happened here and able to support me? Any help would be greatly appreciated.

Thanks.