The profile is the same as the newer Prey since both game .exe files are named the same. So the older one doesn’t show as an extra game in the profile list.
If the game does not hook anymore, you could try to activate the alternative hooking method in the config app. Caveat: this method is not meant for general use, it’s not per se better than regular hooking. Only use it if you encounter issues with regular hooking and always try both methods.
If that does not help, disable/uninstall anything that might interfere with hooking. Most hooking issues are caused by some background program that also hooks into games. Potential examples are: virus scanners, any GPU/CPU utility, messengers, game recording/streaming software, messengers. Generally everything that can show notifications/overlays in game.