Can't factory reset 3rd Gen AirPods
I have a pair of AirPods 3 that I got 2.5 years ago. Earlier today, I experienced an issue where my right AirPod wouldn't connect to my phone. I had resolved this problem before, so I started to reset my AirPods by following the steps here: How to reset your AirPods and AirPods Pro - Apple Support
The issue arises when I attempt to press and hold the setup button on the back of the charging case for 15 seconds. According to the article, the light should flash amber and then white after a few moments. However, when I attempt to do this, the light never flashes amber or white. Instead, the light starts off as green, then disappears for a few seconds, and then returns to green after a few moments. No matter what I do, I can't seem to get the light to flash amber or white, and as a result I can't reconnect my AirPods to my phone.
I've done all of the prerequisite steps, including "Forgetting my AirPods" from my phone, having my AirPods in the charging case, and opening the lid before holding the button. I've also done other things, like making sure my AirPods case is fully charged, and restarting my iPhone. Despite all of this, the light won't ever flash amber or white. What can I do in this situation?