Sharing Multi-page App with Other Plotly users

Hi there,

i have created a multi-page app and created plotly authentication on the top of it. Currently, the app is set to be ‘private’. How can I add other plotly users as contributor into my app so that they can view the report. I tried to add viewers at https:///organize as the screenshot shown below. But my viewers were getting 404 zero clicking the link in the notification Email. Thoughts?