I really hope this turns around for you. I am glad you are taking constructive criticism and actually applying it to help your snake instead of getting upset because you were corrected in some of your husbandry practices. We are here to help, and as you can see, you have gotten advice from some real experts in the field.
I have found that the temps play a really big part of a snake's overall health, and the UTH is critical to have on the right settings. I also agree, the probe goes UNDER the substrate on top of the glass directly on top of the glass in the middle of the UTH. I keep my thermostats set at 87° (per Chip, he is very knowledgeable about UTHs) which makes the top of the substrate on the warm side about 85°. Too warm of a UTH and you can harm your snake.