My April cycle is wrong

My cycle is 28 days in length, my last cycle was Wednesday March 12 so my April cycle Should have been predicted by glow to be April 9th, not April 10th. The app that I've been using prior to finding out about glow is accurate to the day of my cycle every single month and it predicted it to be 28 days from my last cycle, April 9th. How can this be adjusted? I just want both apps to reflect my correct cycle and I want to correctly keep track of my fertility.