Glow app and ovulation

Sheba
Just wondering if anyone else is having issues with Glow when you input ovulation information. I generally have a 31 day cycle but I ovulate around days 8-10, I verify using 2 different opk brands. When I put the LH surge in glow it automatically changes my cycle to 24 days showing an incorrect date for my next AF. It is really irritating that this happens. Does anyone else have this issue or know how to fix it other than constantly having to use the my period is late button because it's not late.