Automated Email Notification not sending


I have built a form that is going to capture responses from people not tied to the organization or have shared access to the sheet. I have a field in the form that captures their email. I built a work flow that if a box is checked, send an email. I have set this permission level to unrestricted. However, when I try a test case with my personal email, I receive a notification that it failed to send and I need to check my permission settings or share them to the sheet. Anyone have a way forward on how to get these emails to send?