So, I don't use google play. I don't have google play installed. Instead, I have obtainium https://github.com/ImranR98/Obtainium/releases which you install the .apk from the releases page to install. Then you add amber to obtainium (You would paste this link: https://github.com/greenart7c3/Amber/releases) and then not only will you be able to install it through obtainium, but obtainium will notify you of updates.