Newbie, a bit lost, and getting "PS: Detached" / "IPv4ConnectionStatus: DISCONNECTED"

So I did make some progress in getting this resolved. I checked with AT&T yesterday and they confirmed that they messed things up and forgot to link my SIM card to a plan that had data. The SIM card was linked to a Text and Call plan. They added data and now it works better.

I did come across a new issue with not being able to lease an IP address and this thread was able to fix that.