Rejection after one date

So I matched with a girl on Salams, and we hit it off quickly, eventually exchanging numbers. After talking on the phone and FaceTiming for about three weeks, we decided to meet up in person, with her brother accompanying her to keep things halal. The meeting went well, and I felt we all vibed together. However, the next morning, she texted me saying we weren’t compatible, which left me confused. I interpreted “compatible” as a nice way of saying she wasn’t attracted to me, but the thing is, she had already seen my pictures, swiped on me, and we FaceTimed. So, I didn’t think attraction was the issue. Overall, it left me feeling confused and unsure about trusting the app. I would like to get brothers and sisters perspective on this.