Embed without login no longer functioning correctly

Embed without login no longer functioning correctly

I created an information request form http://creator.zoho.com/synsales/website-information-request/# and embedded at http://sii-sps.synesisintl.com/Pages/ContactUs.aspx The intent is for the public to be able to complete the form and request information without a log-in. I selected "to access your form without log-in" and embedded the code with the key into our website. It seemed to work perfectly for several days, but this morning I noticed that it is requesting a log-in. I checked the obvious suspects such as hidden private fields (don't have any) and the From email address. I also searched the forum to see if I could spot the problem and checked everything I found. I have recopied and pasted the code to no avail. Anything else I should look at?
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