I have a challenge I'm going to start working on soon. I need to dynamically hide a form after a user submits their email address, and also have that form hidden from all other visitors after that event. The closest thing I could find to that is at the link below:
Dynamically hide form on submit?
visitors will enter their email address to claim one of 26 spots in a contest and I don't want multiple entrants for each submit form.
Let me know if I can clarify any more.