On the app, when I click “Tap here to complete check in”, then it says “ooops, sorry, we are unable to check you in because government regulations require that you check in with a delta agent…”

I might have to check DH’s passport info— they might not have it as he was renewing his when I bought the tickets.

As for planes, DL2400 and the DL801. I booked on delta.com and I believe it’s all delta metal.

ok I’m going to check DH’s account when he gets home to see if they need his passport info.