Update:
Checked the requirements for RPH to do its work, and every program required was there. So I decided to reinstall LSPDFR and Ragehook onto a fresh copy that I backed up on my external drive.
This time I skipped on installing the LSPDFR+ mod, and went on to look for alternative mods with somewhat the same functionality. (ALPR+, Arrest Manager, Callout). Installing these one by one, and testing ingame if they actually work. After a while I noticed that the more mods I installed, the more mods I installed at first started malfunctioning. Mods that didnt share the same keybinds but still somehow interfered with each other. Example: All 3 mods listed above worked, untill I decided to install this "Police Smartscanner" mod. Not only did the mod not work, it also "disabled" callout and ALPR+.
I really don't know wherer i'm just doing it wrong. Or that I missed out on a few knucklerules of modding LSPDFR.