Temp Sensor Custom Rule Issue

[Andrew]

Hello,

I just received the controller and setup has been pretty straight forward using available controller documentation. I have to say it's pretty cool! The only issue I'm experiencing is my attempt to create a custom rule to turn on my tank fan via an AC port when the temperature sensor exceeds a certain threshold. When I navigate to the custom rules page and select Temp Sensor, nothing appears on the page. I do see that I can set up a rule for the pH probe, just not the temp sensor for some reason. Is there something I haven't considered through the setup process? Any guidance would be much appreciated.

My setup is  Robo Tank app 6.5 on a Raspberry Pi 3 running Bullseye.

I've attached a couple images to show what I'm seeing through the process.