A:AnswerYou can use the AirPods on an android but some things like you said will not work you have you go to setting and Bluetooth then open the airpod case and it will show up
A:AnswerReport it to Apple and you may be able to get a replacement pod for $70. Here's a website with prices: https://support.apple.com/airpods/repair/service#lost
A:AnswerIf it is to replace missing Airpods, Apple offers a program to buy the case or Airpods individually. Try heading over to Apple's website. I think this is the only way to purchase airpods without the case.