Hi Jennifer, please share the link for this form so that we can check the form setup.

Here is the form link. Thank you for taking a look. https://neartail.com/sm/nQKxrTnM2

You should never add required fields in the home page. If you choose to do that, then you must not add category quick navigation or products in the home page or enable the search option in your form. You have added two required fields in the home page that also have the products. Users will be able to add products to the cart, click on the cart icon to view the cart page and then click on the call to action button in the Cart page to navigate to the checkout page (P.O. Form Request) without filling the answers for the two required fields in the home page. That's why users were able to submit the response without filling all the required fields. You can either move the required fields to the "P.O. Form Request" page or split the home page into two pages. The form will have the home page with the two required fields, a page with products and the P.O. Form Request page with the summary and the contact details you would like to collect.