I sent a message to the editors about each of them several hours ago, but have not even received an acknowledgement. The last time this happened the staff did not respond until later that day, or the next day (in one case, two days later), saying "Whoops. Sorry. There's nothing we can do about it now. You cannot enter those recipes in this contest."
I have not had this problem with the others I wanted to enter. Thank you. ;o)
P.S. Here are the URLs for the ones I had hoped to enter:
Get the recipes and features that have us talking, plus first dibs on events and limited-batch products.
(Oh, and $10 off your order of $50 or more in the Food52 Shop, too.)