Questions about background, teaching experience, nothing hard or strange, typical interviews like tell us about yourself , your education and experience. Also they asked about my hobbies, what I prefer to do in my free time

I just had my interview this evening. The interview was more of like a background check, giving a demo to a student with regards to a specific topic. The interview was quite short then we moved on to the demo. The "methodologist" told me that the demo would only be 15 minutes but it was not. The demo was longer than I expected and I enjoyed it a bit. I received a response after the interview and they told me that "they could not start their cooperation with me at the moment", I am confused about what it meant because the message was literally merely that.