I did send an email for support on Friday, I’m awaiting for they answer but I already disassemble everything on the extruder so I’m a little suspicious if the warrant will work.
I've done some horrific things to my printers and they didn't care. They are on aisian time (+7 or something UTC) so unless you near then, mostly likely the to and fro will be per day, so try and put as much info as possible into your messages if they get back to you for more info
Not worth to repair since they are cheap imo, but dont buy a motor before you confirm its not something else. You have 3 components, motor, wire and stepper motor. Plug it in x driver and move your x. If the problem is still there its motor or cable. Then switch cables if they are detachable, or visually inspect cable/connector.
So if you are looking for feplacement, just find a label on your motor and search that on internet. If you dont chose the same model you might need to change your stepps/mm in fw or adjust current (vref). Its most likely nema17 bipolar 1.8 deg, but you have to check length to be sure it fits where your extruder should be. Simmilar size = simmilar power, but you shoudl fine tune your vref anyway. Too much current = motor overheating or stepper motor overheating and it can also skip, too low current = motor skipping. If it died you might be running it too hot, but you would probably burn driver first.
Ye I couldn't find any datasheet of that one. Maybe e-mail them and ask?
Well, I'd say any Nema17 bipolar (4 wires) 25 mm in length (similar current) and probably 1.8°/step or 200 steps/revolution (like most of them) should work. If you get wrong resolution (steps/revolution) your extruder will move wrong distance (like double), but you can change that in FW. And you should fine tune Vref (small screw on your stepper driver or in FW) to find sweet spot between heating and torque