you are right – the fading logo shall not be displayed as you have purchased a license! Are you sure you did not have one in your project? The Empty V-Play Project for example has a fading icon in it to show how animating a property works.
Also, did you generate the key for the correct identifier (you can find the app identifier in the config.json file)?
@ Qt Creator’s UI Designer
Please see this thread how to solve the issue.
@ License Generation
There is no list of previously generated licenses, but you can just re-generate a new license key for your app identifier, they are unlimited with your V-Play license.
@ V-Play Plugins
With the Starter license, you get access to the Facebook plugin. The other plugins are available for Indie,Studio & Enterprise licensees, and you can also test them out with the provided samples. You can find the installation instructions & all available plugins here: http://plugins.v-play.net/