When did I ovulate?

I’m going to preface this with the fact that I am a TERRIBLE sleeper, so I definitely have higher temps because of my sleeping habits. I wake up every hour on the hour. I have a Tempdrop coming in the mail, but I used an oral bbt this month. The app says I ovulated on CD 13, but the OPKs and temps make me think I ovulated on CD 15. This isn’t my primary charting app which is why there are so many triangles (I log in this hours after I log in the primary one so times appear off). Also, the app placed that cover line which I think it’s wrong? Either way, what do you ladies think?