Hello!

I am new to 3d printers and this is my first printer. Last week i have bought Ender 5 pro and from the beginning i have problems with extruder skipping steps/missing layers. It was occuring at random times. Sometimes at the first layer, sometimes after 2 hours of printing.

I have tried adjustment of temperature, speed of printing, bed levelling, tried different brands of filament, checked for any jams and the problem is still occuring. Today i checked how the extruder works without filament and even then it is clicking (https://www.youtube.com/watch?v=k3esLzxAhkg). How can i resolve this problem?