Ender 5 Pro | Extruder stops wheil extruding, no commands taken anymore

Hi,

i did reset my printer, put Marlin 2.0.6T1 on it (V4.2.2 Board), i ran into a few issues but i fixed most of them myself. But now i ran into a thing i cant really think of any solution. I changed the cables on the steppermotor (1 vs 2, 3 vs 4 from left to right) to change its direction, since it was running the wrong way. Also i had to cut a few cables and rewire them, Heat cartridge and 2 fans instead of one fan for the noozle. But these are running fine, as well as the Heat on the nozzle (PID 15 cycles donw without problems). Now to the Problem:

I heat the nozzle to 200 degrees and then i wanna extrude 100 to calibrate my E-Steps. In the first 10-15mm the extruder just stops, i cant use anything with the knob (i can choose like move X, but nothing happens) and it doesnt give any error message. The only way to get it back to working is to shut the Printer off completly and restart it. This works until i wanna extrude again.

What do you think is causing this? Did i fuck up with changing the wires for changing direction of extrude? THIS is working now, just not all the way through.