I dont know what exactly I did with Ender 3 Pro. I bought one some weeks ago.

Today I printed a very regular part and in the end, I could see that the extruder is flopping... its loose...

See the video below:

https://www.youtube.com/watch?v=cygAmcIzH5I



I'm really sad.. If someone can tell me what happend and how to solve it I would appreciate a lot!

Thanks!