Amazon builds and sells Android tablets. These tablets have a custom version of Android, where apps are installed via the Amazon App Store instead of the Google Play store.
To submit an app to the Amazon App Store, developers can either submit a web app or an Android app. I went to submit my web app, only to discover Amazon doesn’t allow me to submit it, saying,
“The SSL certificate used by your web app is invalid.”
Of course, it’s not invalid; it’s a valid LetsEncrypt cert.
Amazon’s answer is,
“So at the moment Let’s Encrypt is not supported / cannot be added to the list of Amazon supported certs regrettably. You’d need to use as mentioned earlier, DigiCert, Thawte, Entrust, or Verisign, etc. Thanks!”
This has been the answer for almost 2 years now.
I’m posting here to see if we can put some pressure on Amazon to support LE. If you want this to happen, please comment on this thread, retweet this, or go through more official means. It seems to me there’s no good reason for Amazon to not support LetsEncrypt.