Heating problems

So my problem is when I start a print, the bed and the nozzle start to heat up but they jam at a certain point. I don’t think its a hardware issue because when I close Cura and open it again I can get it to past the heat point where it blocked. Same goes for cooling its stop after a certain point. Its like the heat can only change like 25 degrees and then stops. I use curalulzbot 3.6.23. Please help asap. Thank you!

Might be useful to know which printer and what OS are you running CuraLE on?

Can you slice a small object (i.e. a 5x5x5mm cube) and the upload the .gcode here (you may have to zip it up first)?