Unable to submit the form after filling all the fields.

I was just told by a customer that she tried to send a completed form with uploaded images and it would not allow her to submit.  

  I wonder how many submissions I lost this way.  Please tell me what the issue could be and how we can resolve it quickly.  This is effecting my relationships and my business.  

  Thank you for your immediate response!

I cloned your form and performed a test submission. However, I am not able to replicate the issue. The form got submitted without any problem.

Could you please tell are you getting any error? It would be great if you can send a screenshot of the console log. Also, if you embed the form in any web page, please share the URL.