One of my HomePods is connecting to the neighbors WIFI-Network all the time, restarting doesn’t change anything and I can’t change the WIFI-Network manually in the app. Why isn’t apple able to give the user the possibility to change the HomePods Wifi-network without any circumstances??? I don’t get it. I’ve neither entered the other WIFIs password nor did setup anything regards that.
No. You don’t understand. The OP was literally connected to their neighbor’s wifi WHEN THEY SET UP THE HOMEPOD. This is entirely on the OP, and Apple is not responsible for them mooching off their neighbor.