Confused about ovulation!

Hey everyone, I just started using this app and just started ttc within the last 2 weeks. I took my first opk this morning and it showed I was at my peak! My calendar changed because of that and now I am a little confused. I know things will change especially being off of the nuvaring for a little over a month. Will tomorrow be my 1 dpo? The first photo is my current calendar and the next is what it looked like before today.​​