Why do I get the message that my AirPod Pro are not eligible for AppleCare?

When did you buy them and did you buy them from Apple or an Apple Authorized Reseller?

https://www.apple.com/support/products/headphones/

How to buy

1. Purchase AppleCare+ with your new headphones.
2. Or buy it within 60 days of your headphones purchase:

• • At an Apple Store (inspection of headphones and proof of purchase are required)
  • By calling 800-275-2273 (requires you to run a remote diagnostic and provide proof of purchase)

Thank you!! This was very helpful.

Thank you! Your expedient response it most appreciated. Very helpful.