When does it look like I ovulated?

Natalie

This is my first month temping and I’m not really sure how to read these not to mention the FF app keeps flip flopping my dates from the 14th to the 16th and now to the 17th. Also, Why don’t I have a cover line on my glow chart yet? When does it look like I ovulated the 14th, 16th, or 17th? Thanks in advance!