Temperature Target Changes

Hello, I’m somewhat new to printing, and I’ve encountered a small problem that started today. My temperature target on the Nozzle keeps changing. I had set it at 220°C, and it goes down as low as 200°C. Does anyone know what could cause this problem?
I have ender 3 v3 ke

You must ensure that the temperature setting for your first layer and all other layers is 220.

ok, so after using ChatGPT, he showed me what to do, and yes, it worked—just had to tick off Auto Temperature. I can swear this did not happen before. I updated my Creilty slicer, could this have caused the issue?