Houston we have a problem! App is acting weird!

I’m wondering if someone can help me because this App have me confused. So I took ovulation test on 10/17, 10/18 and 10/19 and the results were low. Then I took the test on 10/20 and 10/21 and both days was “high”, I got a blinking happy face (using clear advance blue). Today 10/22 the ovulation test shows low.

When I updated today’s information, the App says that I’ll be ovulating in four days 🤔 this has really confuses me and was wondering if someone can please tell me if they had the same issue! OR maybe I missed something.