I'm pretty new to blender, and as I was getting used to 2.79, 2.8 landed and confused me ever more. I was wondering why the Shadow Catcher blocks the background image I set even if I checked transparent under Film.
Found out an answer. I should've just searched tutorials instead of troubleshooting forums instead.
Here's the link that helped. https://www.blendernation.com/2017/04/17/use-new-blender-shadow-catcher/
So I apparently just needed to hit render and mix up some nodes in the compositor.
Thanks to the people who took their time to correct my post as well!