I need help changing to pregnant status

So I suffered a miscarage a few months ago and recently just got my BFP! Yay! But when I tried to re download the nurture app this window keeps popping up saying its clashing with my previous due date. 😞😞😞 which yes, technically does. It's just making me slightly discouraged and I just want to put it all behind me! Any advice on how to make it work? I changed the status on the nurture app to "pregnant" and it's no longer "dealing with a loss" or whatever and I have changed the status on Glow to having a positive test. I tried deleting the nurture app and whatnot but it keeps doing this 😞😞😞 help please?  I just want to see my little growing peanut! 😊 thanks!