Problem about connecting my airpods to my macbook air

I have been having some sort of problems about connecting my AirPods to my macbook air recently. I don't think the problem is about my AirPods because I tried to connect it to my other devices and it worked. It is just not working on my macbook. I can't remove my AirPods from bluetooth devices because I can't see the X to remove it. I tried restarting my AirPods, my Mac, but It still doesn't work. I hope you see this and reply quickly. Thank you