Originally Posted by goodeats21

With no status, the app is probably the best way to get help during irrops. If you know ahead of time you will miss connection, I would at least try to call to see how bad the wait time is.
Most (all?) of the customer service desks at EWR are no longer staffed. They have a QR code you can scan to get connected to an agent instead. No idea how well that works.

You may end up with a choice of either sitting in regular economy or waiting a day (or more) to be accommodated in PP.

If you arrive in Terminal A, best to take the transfer bus to Terminal C. Quicker, and you do not have to re-clear security, etc.