What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I checked the URL that you gave. Probably, the issue caused by conditions that you put for "I would like too..." and "Please choose your service." fields. If user leave those fields empty, date/time and the other fields remain hidden for users.
You can access the conditions for specific field by using following steps :