I have an app where employees can submit information to a SharePoint list. The app includes many people fields (for the project lead, project reviewer, etc.) that are connected directly to the SharePoint list (I'm not using Office 365 user connection). The app is embedded on a SharePoint page where everyone can access it.
I have the app set up so that the fields will auto-populate based on the project code. When a user goes to input information, all of the fields (including the person fields) are populating into the form as normal; however, when they submit the form, the person fields are not populating in the SharePoint list. All other fields seem to be submitting just fine.
I have tried refreshing the data connection and re-embedding the app into SharePoint. What else can I do to troubleshoot/fix it?