Retiming ovulation dates?

Hi- does the glow app retime our ovulation dates based on when we get our periods? I ask because I came off birth control a few months ago, and I think my period is finally starting to regulate/ return to normal... It was shorter and lighter last month than it used to be before BC (I was hoping it was implantation bleeding, but no luck, pregnancy test was negative a week later)... I'm just wondering since my period came differently last month from the month prior (due to coming off BC), will the app change my likely ovulation dates? I put in all my period information, to reflect when it started and stopped, but it doesn't look like ovulation changed on my Glow calendar... Any way to fix it?! Thanks!