Hi Ginnie,
I'm not sure why it wouldn't work on DR when it works with DF. Would you please enable debug mode, fill out the form and hit submit? We'l need to see the resulting string. It might be better to do this privately instead of on the public forums so I would suggest you use our Contact Form and just add the URL to this thread for reference.
http://www.datasprings.com/contact-us Thanks!
Candace