I gathered this was because the kindle wasn't logging into to the google play store. Found a guide online that suggested installing several of the google apps: gmail, account manager, google play ...

The 12th-gen Amazon Fire tablet is the first device to ship with Fire OS 8, the latest version of Amazon’s tablet operating system, and it’s now available from Amazon for $60 and up. While Fire OS ...

Amazon’s Fire tablets ship with a modified version of Android called Fire OS. It’s tightly linked with Amazon’s apps and services including the Kindle, Prime Video, and Amazon Music apps. It also ...