Forms broken

Has anyone else had a problem submitting forms via mobile phones over the last week? We are having problems with two forms/sheets for tracking Time Sheets and Receipts. Both items we need to get working soon. Both of the sheets work directly via computer. It is just using the form on the mobile app. When the employee enters their name and tries to complete the form, they receive an error "Please enter or select a contact from the list". Which has been done. Only thing that I am noticing is that if they are a registered user of Smartsheet, they don't receive the error and are able to complete the task/form. "Anyone with the link" is checked in both forms as well. I did check to make sure that neither form/sheet has been changed. Just started happening a week ago. Have tried to reach out to support and created a ticket - no help.