Smart form not validating

I'm having the same issue as this unanswered post. Form submits from a local preview if I input a random character without it giving an error message as seen in the video tutorial. I can even submit with just the 'a' alphabet in the email field.

Wish I could help, but I do not use BSS form functions. I use a service called

I have way too many clients and need more customizable and varied features than the BSS forms support. I suggest looking into it.