The rumor has only now been confirmed. So I am acting right now and also asking for advice in a forum. Tomorrow after the appointment I will decide on what I consider the best solution. Of course, I also hope to get information from the building authority that will support me. Maybe even a tip from the building authority. It could also be that they act as a mediator and arrange a meeting, I will find out. And if nothing works, my gut feeling will decide and I will either go there or leave it. That will be shown accordingly. This strange situation came about due to negligence by the authority and, of course, on the part of the creator because of neighbors who have some problem or see one.