It means that the Rainmeter Spotify plugin is no longer compatible with Spotify app. However, the Rainmeter Spotify widget was closed at the end of 2018. Users can customize the style to their liking for a cleaner, simpler and easier to use interface. And the Spotify Rainmeter skin involves all the features of a standard player, such as play, pause, previous, next, etc. It is free and open-source for users to create their unique 'skins', which contains a series of desktop plugins or widgets. What is Rainmeter Spotify plugin or skin? Rainmeter is a desktop customization tool.