If you have granted the permission to install apps on the subscription screen prior to purchasing the subscription, the permitted apps would get installed in BlueStacks App Player.
1. First Pay Or Install pop-up is displayed on your screen.
3. Second Pay Or Install pop-up is displayed on your screen.
4. Again you click on 'Install Apps'
5. On the third pop-up, you can click on "BUY NOW" button to purchase the premium version.
NOTE: Prices are not shown above as these are subjected to change.
In this case the apps displayed on the first and the second pop-up would get installed.