Good morning. Yes that helps and helps explain some things.
So those are a budget model with a very weak sensor for a 8MP camera. Which means they aren’t great for nighttime. It’s possible the single IR light is indeed on but due to the poor match of sensor to MP and with inherent weak IR, that’s the best we are going to see without adding some external IR.
As we’ve seen, it’s not capable of running color at night again without some help from external white light.
Try Manual on that setting and push it to max brightness 100 or whatever the control allows.