There is a rain/freeze sensor hars wired somewhere into my system (not at the panel). This has to be the culprit. I just checked it and it's dry. Seems to be working fine as the sensor itself is fairly new. It hasn't rained in a few days. It's 46 right now. Maybe it thinks it's too cold?
I'm going to try later today because even manual running of the app isn't producing any water.