If you're an admin for your organization's Webex Teams, go to https://admin.webex.com/settings.
Scroll down to the section that says External Communication.
- Under Block external messaging, make sure the switch is turned off.
- Under Whitelist domains for external messaging, make sure you add the m.io domain name.
If you're having issues working with the Mio app after following these steps, please email firstname.lastname@example.org for more assistance.