xFi Advanced Gateway blinking green light fix?

For the last 24 hours my xFi advanced gateway has had a green blinking light and I’ve been unable to connect to the internet in that time. I’ve tried unplugging the cables and plugging them back in. The power cable works fine and I’ve tried different coax cables with no success. Is it an issue with the coax outlet ? Would factory resetting the gateway help? Any assistance is appreciated. Much thanks