I can view the form elements OK in CSS Form Builder — but only the fields, not any styling in the preview. When I 'finish', the form renders OK on the live HTML page, but again all fields are required, and a blank form can be submitted. After adding the security question to the original form, I didn't have the need to go back on alter anything...
And yes, I can edit the HTML without problem, so a support ticket would definitely help.
In the meanwhile, are there any examples of a working form with all associated files that I can reference and compare? Thanks again for your time and patience on this. Anything you could provide would be most appreciated.