When you log into Facebook for the first time with your Mevo app, you are prompted to authorize the Mevo Camera app for Facebook and grant certain permissions.
One of these permissions is your default audience. If you had selected Friends in the initial setup, then you are not able to stream to a public audience, including Pages and Groups.
To resolve this, you need to change your default audience to Public. Log into Facebook on a desktop browser. Open the drop-down menu in the upper right corner, then select Settings.
In the left side panel, select Business Integrations.
The Vimeo application is located here. Select View and edit.
Scroll down in the modal that pops up. You will see a setting call Business integrations visibility and post audience. Open the drop-down menu and select Public, then save your settings.
Now you have more flexibility with choosing your Facebook audience in the Mevo App. Selecting Public will allow a public audience to see your live video. If you are going to stream to your Profile, you can still choose to have a restricted audience (e.g. Friends, Only Me.) from within the Mevo app.