Wrong ovulation?!

Glow had me starting my ovulation Friday April 1st. March 31st I took an ovulation test an received a positive right away. And then tested again Friday an today. Thank goodness I tested or I would have continued to think glow was correct. This was also my first time using an ovulation test me and my hubby for trying for over a year. And we used pre-seed this cycle😊 baby dust and many blessings to all ✨🙏💖