You aren't going to notice a difference until you level up. If you've leveled up and still only get 5 crew points, then the issue lies with the installation.
Don't un-zip the file, just leave it as a compressed file. And make absolutely sure you've put the file in the correct folder. The path should look something like this:
C:\ ... \Drox Operative\Assets\Mod_CrewPointsPerLevel.zip