Window lifter passenger side Does not work or spins

Hello!

Again a question of a newcomer!
I bought a V8 yesterday and the window lifter on the passenger's side doesn't work!
This is the problem.
The window opens when I press the touch switch and then stop closing.
I removed everything and I plugged the 2-pole plug in the other way and then it went on the Zumachschirr too but no more!
Weis irgendwer was da sein könnte?
The motor is not it tried it with another engine and I also changed the switch.

Thank you