Thank you for helping me. I am not a very patience person, so I tried and tried. And found the creator and talked to her. She didn't know what to do.
But - this is what i did (and it was touch/grab option that was checked, so I couldn't change anything there. And the for sale button was grey so I couldn't check or uncheck there either, that was unchecked...)
The thing that made the sign go away was uncheck the box "show in search"... hope that was something I can use for other items as well if I come across that type of problem again.