Why is my mi band 4 screen not turning on?

My Mi band 4 was last used in about almost a year because I lost its charger I ordered one on ebay when it came I tried charging it but it wasn't showing any charging screen I kept pressing the button on it, still nothing only vibrating.
My screen is just not turning on and after 10-15 minutes i go to press the button on the watch it vibrates 2 times and then does nothing.