Ovulation date discrepancy

Ma

1st month really TTC. I use opk, and bbt, and a few different tracking apps. Glow updated today based on my info this morning. It moved my ovulation day to yesterday on the calendar but my opk test results from Glow say ovulation is around the corner. This is the only app that changed anything after logging. It also moved my period due date up the 23rd from the 25th and I have a very regular and predictable cycle. I am pretty dang positive AF is due the 25th as are the other apps I use to track.

Anyone else ever get a discrepancy like this. We BD’d every day so far in my fertile window so I’m not overly stressed about it but clarification is always nice.