Wyze Thermostat - fan only settings

[Cluster]

Wyze thermostat lost FAN control option

hi. My thermostat worked well for over month and one (cold) night it stopped heating. Next morning I removed it and added again. Then the FAN option was gone (fan on, cycle, fan off) from both the unit and the app. The fan works when it heats, but I lost the ability to control it. I have Rc red wire, Yi blue wire, W1 white wire and C green wire connected to unit. Did the fan wire get disconnected? If G wire is for fan, is my C wire controlling the fan? Which of my wires control the fan??? Whe…

my issue is here, along with pictures