Unknown respondent

We are an accounting firm and we use Type Form for our end of financial year client questionnaire  It’s extremely important that we know who each respondent is.  There is a compulsory What is Your Name question in the form.  

We have received a completed from from somebody who has answered the “what is your name” question with “myself”.  They have uploaded documents to the form, but unfortunately the uploaded documents don’t shed any light on who it was that actually filled out the form.

Is there a way for us to figure out who it was that submitted the form?  Can the Typeform technical team go into the back end and see the email address from where the Typeform URL was clicked??

Any assistance would be greatly appreciated.