I am having the same issue with the extruder not feeding, clicking. I think my nozzle is clogged now because I can’t manually feed the pla through. I do have the jumpers on the extruder. Any tips for calibrating pressure or any other things for me to try?
What temperature and what type of filament? have you tried bringing the temperature up as that’s the most usual problem when the extruder jams. other than that you can check to see that the spring is putting enough pressure on the filament to keep it from grinding. then you’d check the stepper driver voltage and increase that if it’s still giving you problems. but since the nozzle is jammed and you say it’s clogged and won’t push through manually then it’s most likely too cold for that particular filament.