No OPK peak. Really confused

Jess

So last month I ovulated at cycle day 21.

This month I started testing with opk from cycle day 14 -24(today). According to the premom app, my highest LH level was yesterday(0.77) and today it went back down to 0.33. But premom still considers it a "LOW".

I don't understand why.. did I miss my ovulation or something else?