The game cannot be installed after it has been uninstalled.

The folder in My Games shouldn't interfere with the installation. After all, there's an uninstallation mode that saves the game files. I forgot to check the registry yesterday. Most likely, the registry entry was deleted, but the folder in "Uninstall Information" or "InstallShield Installation Information" remained. I don't understand how a licensed game can install incorrectly, requiring reinstallation. Perhaps it was uninstalled incorrectly as well.