On http://starshipeden.com/ we have a gravity form to manage 3 tiers of tickets.
There is first a radio button to select what tier you would like, and then appears the price, remaining ticket #, and quantity box. Each tier is set up as a standalone single product and quantity field is not hidden.
Presumably, I think I have met all the criteria for this plugin to work. Unfortunately, after having everything set up, form submissions are not decrementing the number of remaining tickets. I've had to go in and do it manually every so often ...
Can you please advise on what I may be doing wrong?