Thanks.
The humidity, my problem is that my humidity sensor is lying as it is cheap and it also has temperature which always shows the wrong temperature so I can't trust it.
I am currently not controlling the humidity but only the temperature. The humidity naturally in Malaysia is high as it is tropical, usually around 80% or basically in the range of 70-90%, but I am using styrofoam which could affect the humidity inside. I currently have eggs in my incubator as well actually. I put some which I wasn't sure if they will work, as they were quite old, and they seem to not change, some seem to show what might be the ring whatever it was called which means it died, but one of the chicken eggs has a heart already and it is alive, I can see the heart pumping, there are blood vessels around it that looks like a spider web, so it's currently day 6 I think if I remember correctly. Maybe day 5. I might add other eggs as well. If any egg hatch, I can move it out so other eggs can hatch.
Again, thank you very much for helping. I didn't have time to open the links you sent now but I will check them out