In our new Sitefinity versions, we made sure that forms responses are sent, exactly as form controls are ordered. However, a possible reason for the problem would be the instructional text of some of your form controls. Such text might cause the improper ordering of form responses. this behavior has been logged as a bug in our system. You can track its status, following the PITS link.
Please try to edit the form, copy the text in the instructional text form control and delete the instructional text form control. Then publish the form. Go back to the form and add the instructional text form control again and publish the form again.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items