AirPod case won’t charge but orange light is on

I’ve had my AirPods for a few years and have never had any issues with them. Over the last few days I have been trying to charge my AirPod case and I have been thinking that it had been on charge all day as the orange light on the inside was on. However, they are still at 0%. When plugged in my case connects to my phone but whenever I try to connect them to my phone without them being plugged in it doesn’t work. please could someone help me?!