Story - Crossbow Shoot-through Mesh Miss

When I first got my popup blind, it was advertised that you could shoot through the screen with broadheads with out affecting accuracy. I did a test in the back yard and sure enough they were right. I went out to put it to the real test. I set up the blind and hung a cheap feeder for a few weeks and had deer coming into it pretty regularly. I set up in it one day after work and had a few does coming in about 30 minutes before dark. It was a perfect 20 yard setup, but I shot right under her. The footage is blurry because I was filming through the mesh. After watching the video, I realized that I needed to lift a corner of the flap to have a clear spot to film from. I thought I missed because of the mesh, but I lent the crossbow to Robert and he missed one too. I went back to the target and it was shooting way low. The only thing I can think is that I must have bumped the scope or the cooling temperatures affected the speed of the limbs.