Hello! We had this same issue and the Constant Contact help desk gave us this fix: If you add this text to the end of the URL that comes up when you click on 'Register someone' from the dashboard, it will reload the page and allow you to register someone after the registration has closed. &condition=SO_OVERRIDE So be sure that the very end of the URL for that registration link looks like this: '=&c=&ch=&condition=SO_OVERRIDE' Good luck!
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