I'm using gravity forms and have a fairly extensive profile for each user. They are able to add 5 other forms of data to their profile/user meta. My users are able to send an email to a non user and ask a yes no question. The link in the email fills in the registered users email and the unique ID for any of the other 5 forms which add to the registered users meta. I need the non registered user who clicks the yes/no link in the email to update the registered users meta. I'm using the user-registration add-on from gravity forms. The form with the yes no question is all setup to update the registered user meta but the person responding does not have an account so they are receiving the "you must be logged in" message. Any ideas on how I can allow a non registered user to submit a form and update the registered users meta with their response? Again I do have the registered users email and unique ID (not their user ID) being passed via the url to the form with the yes no question.