Team Orion Advantage Touch Advance charger

[Jepsen]

Hi.
Is there anybody in here that knows what the "Light orange" color on this
touch screen is?? Or why it looks like that??
The charger is as good as new, it has only charged 3 batteries.
The charger works 100% as it should, but I dont think the touch screen looks
100% as it should.
I have sent an email with this picture attached to Team Orion's customer service, but they are just ignoring my
email... very sad, because I'm very happy with the charger, but not the touch
screen.
Hope anybody can help

Many thanks.
René
Denmark