Hi Anna, you have hidden some of the fields in the form. If you are planning to hide fields, you must not mark these as required input fields or add calculations with response validations for these fields. Otherwise, users might face issues with submitting the form. If you hide a required field, users will not see this field and hence will not answer this question. When they try to submit the form, the form will throw an error for this required field, but users will not be able to see it. Similarly, if you have added calculations with response validations for a hidden field, then if the calculated answer fails the response validation, then the form will throw an error when the user tries to submit the form, but users will not be able to see it. You have added number response validation for 折扣總金額 hidden field in the form. Since the formula is incorrect, it is returning the error message "Computation failed ..." as the answer, which fails the number response validation. That's why you are not able to submit the form. You should fix the formula, response the number response validation and then test your form. Please try this and confirm.

修正公式後，問題解決，可以提交表格了，謝謝。 祝 好~~

Thanks for the update Anna