help with product options and add to cart button

aviatorsindoorfootball.com/buy-tickets.html

Click View Details, I can't figure out to enable the Add to Cart button and enabled the drop-down for the options -- no matter what I choose in the configuration - nothing works.  

What am I missing - please explain in detail, I keep having the same issue when setting up the shop.

Thanks
Trey

Dear Trey,

I just checked and I saw you have already enabled it.

Sincerely, Giang