Confused ovulation

Melinda

According to this app I one DPO. But I have not ovu lated I'm in fertile window.lh high no surge yet. but I don't know how to make this app know that This whole thing is so new to me it's so frustrating. And does anybody know about low Lh surges maybe I just have a lower ph surge. my highest number so far is 12.5 according to pre mom test trips.