Whilst you’re doing that for Austin, can I ask a question.
On the camera you think isn’t working on IR, maybe there is nothing in view for the IR to see, or more accurately to reflect back off. If it isn’t pointing down, so it doesn’t see the floor, and the first nearest reflective surface is say 50 feet away, then it would look black. A bit like pointing a torch into the night sky. Nothing to see, unless it’s a really powerful torch, and it hits a cloud. Obviously I can see the window, so it looks like that wall should be illuminated, but I can’t be sure.
Can you walk in front of it at night, with motion enabled, and see if you get a recording with IR illumination then? I’m guessing not, but the two pictures you showed were live views, so it isn’t so obvious. If IR is working you should see quite an obvious red light on it when it’s recording at night, or when IR set to on. Do you see that?
Assuming there is a red light, the next thing I would do is swap the cameras, and see if the IR issue follows the camera, or the location.
I could guess if the daytime IR filter was stuck in place, you would get poor IR response at night. When it makes a recording, at night, do you hear a nice reassuring click, when a recording starts at night. If not, you could try changing the batteries for brand new, in case you had a duff set. Don’t go off the indicator in the app, saying OK, it is notoriously wrong. Unlikely if a new setup, but worth a shot.