Creator stopped sending e-mails?

Creator stopped sending e-mails?

Hi,

I have figured out that creator stopped sending e-mails after the completion of the form that is embedded in my web site? It was running perfectly before 8th Jan. Since 14th it does not work at all.

Here is the form

https://creator.zoho.com/istanbultangofestival/2013/#Form:Registration_Istanbul_Tango_Festival_2013

Regards...
Aydogan