Hi Amie, I just submitted a response to test the form and it worked without any issues. On submit, the thank you message was displayed. If you are facing any issues with submit, could you please share the answers that you are trying to submit so that we can also test it with the same response. Note: If you have hidden fields in the form and if the answers, either calculated or prefilled, fail the response validation, then you will not be able to submit the form. Because it is a hidden field, the error message will not be displayed in the form.