Thank for your help, but it turns out I figured it out on my own.

I decided to check the probe because I thought maybe it was just too far away from the thermometer probe, so I picked up the hide and the thermostat probe was sticking up through the bedding! No wonder it was reading so low!

I taped it next to the other probe and voila, perfectly synced. Imagine that, lol.

I also wanted to say that normally I would have checked earlier but it's my snake's first week home and I'm trying to keep handling and disturbances to a minimum.