Period info

Salena • Avoiding pregnancy and trying to understand my cycle
How can I reset my period info? I skipped my last period for feb, so I deleted it, then tried to add it back, so it now has my fertile window right now and I know that isn't right, and it has my next period on the 22nd which is too soon. Also there is a weird little tab piece that has 2 days highlighted that are completely irrelevant.