Trying to enter Halloween Costume Contest but email keeps saying Halloween Decorations? Answered

I'm trying to enter one of my Instructables in the Halloween Costume Contest, and it keeps being sent to the Decorations one instead. I don't understand why this is so - I've made sure I was on the Costume Contest page and not the Decorations one, and yet the emails sent to me confirming my contest entry keeps saying "Decorations". Can anybody help me with this please?
I also fear I might have double clicked the button so my entry might have been sent multiple times... is this okay...?