I had already received my email confirmation, directly from Princeton, that they had received my application in full.
I’m still not able to create an account on their Application Tracking System, to submit my arts portfolio. Is anyone else having the same problem?
@Kyuutoryuu Give it a day or two. It just takes some time, probably more time now with all the apps that just came in. 
Cool, I will wait a few days and come back here and report if it works 
Yep, just checked now. My Princeton Portal works fine.
You just need to give it ~2 days.