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.
Is it possible with a single sign on code for the multiple amount of customers where one code only works once and the form will be shut downAsked by Denne on August 26, 2016 at 09:23 AM
You can use the Unique Submission feature of the form.
User guide: How-to-Set-Unique-Submissions-on-a-Form
When using the Unique submission feature, the user who had already submitted form will not be able to submit again the form unliess you remove Unique Subission on the form.
Hope this answers the question. Let us know if you need more help.