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I have found the problem but not sure why it occurred.
In the Preferences the form had been disabled but I do not understand how this could have occurred.
I checked the website and I can see the form available.
Did you perhaps unknowingly had Disabled the form?
Here is the user guide on how the form can change its status
As is now, your jotform http://www.jotform.co/form/23513291593858 is enabled and your account is also Active with no issue.
Hope this help. Inform us if issue persist.