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To my understanding you are seeing your form submission data as Encrypted.
It sounds like you may have incidentally turned on the Form Encryption option.
To turn disable it simply go back into the form you are seeing it displayed on by editing the form again then in your form preferences at the top toolbar of the formbuilder switch Encrypt Form Data and change that to " No ".
Please see http://www.jotform.com/help/344-What-are-Encrypted-Forms-and-how-to-use-them-as-expert for more information.