UPS Mode on Screen on first charge EB3A

On my first charge of my EB3A, I see UPS Mode blinking on my screen.
My EB3A only charges when I plug it in my EB150 via the (input 220-240/VAC/4AMax) but when I plug it with the same port to the power grid, it doesn’t charge. It only shows (UPS Mode) on the screen

It appears that you have the frequency set to 60 htz and I suspect you are in a country that operates at 50 htz. If that is the case, you need to change the frequency setting to 50 htz. to match your country grid htz. spec. What is your electrical grid frequency for your country?

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