Hey wivamonsoon,
Sorry for the troubles, we will update our installation guide. Until then, from the main WordPress side menu, go to Settings->WP Facebook Pixel. From there you should see a tab “Activate Pro”. If not, delete the currently installed plugin, download the pro version from this site here http://www.nightshiftapps.com/my-account/.
Please let us know if you have any other issues!
Jacob