Look for an application in your setup called RocketLauncherUI and double click to load it.
If it has been installed correctly by the seller, you will see a box show up with a series of tabs across the top (general, settings, emulators etc) and your installed system names (Playstation 1, Nintendo etc) down the left hand side.
This is your interface/starting point to identify and fix any problems with -
1. games not loading due to filenames not matching the system database
2. emulators not loading when they are not assigned to the correct system.
and any number of other problems or more advanced ways in which to customise your Hyperspin.
You will need to start learning the basics about this interface if you are going to have any chance of fixing issues with your prepaid setup. There are plenty of youtube videos which can do just that. I suggest watching a few whilst having your RocketlauncherUI open in a separate window to cross reference.
If you aren't prepared to invest the time to do this as all of us here have done when we built our own setups from scratch, there is little chance of you fixing any problems you currently have with your setup or ones that will arise in the future.