Since this is apparently still a mess for hundreds of people and I myself still couldn't print my NJ return, even though the state has received and been processing it for weeks, here's an actual solution someone managed to grind out through hours on the phone that I just came across completely by accident:
-In your account home page, scroll to the bottom and click on "Add a State" (Even if you've already filed your returns, it's just to open more options)
-On the left bar you'll see new options appear, click on "Tax Tools" and then "Print Center"
-From there follow steps to print out whatever states/forms you want
I can't guarantee this will help everyone but it worked for me just now, at least a month later I can finally stash a copy of my NJ return somewhere for safe keeping. Good luck y'all.
