What would be rejection reason for 4 flyers ? 3 rejected in 1min

Please share with me what would be the reason for rejection, I need just to understand and it will be a pleasure if one of the Envato team can tell me, it’s really hard to spend hours and hours on one flyer and at the end to get this message of rejected just for no reason and in the same time I had many designs got approved before just really wonder !!!