I emailed and got this response:
Thank you for contacting the Wayne State School of Medicine. At the moment, we are working to sort through our first batch of secondary applications, which will take longer than the standard 48 business hours it generally takes. We are unsure when the applications will be uploaded to your portal, however if you would like to check on the submission of your secondary application, you may see whether or not it was submitted on the dynamic forms website. Under the "Forms History" tab, it will say whether or not you have submitted an application. Thank you for your patience!