"Submit" button - upload form submission

Hello, we are having problems with the forms. When you click the “send” button it is blocked and not sent. The form stays loading. This happens when we try to edit the information on the forms that have already been submitted, we open them again, edit the information, click the “send” button and it crashes.

Welcome to the community, @mariad24! Could you also let us know the server you are using? Have you also checked your XLSForm through this online validator to see if there are any syntax issues?