I had a similar problem. Any field affected by the date field’s conditional logic didn’t appear in the Gravity Forms Notification.
All I could do was stop using the date field’s conditional logic.
That’s not really a solution at all!
Thanks for the tip – we’re actually closer to solving the problem now. It appears to be a conflict with a specific plug-in from dotMailer. Deactivate the plug in, the buttons work. Reactivate it, they stop. CSS or Javascript may be the underlying cause, but I’m leaving that determination to the clever folks!!!
Thanks again for taking the time to help.