Firstly, you need to be an admin of the Facebook group you are streaming to for Castr to connect successfully. You can connect and set up Castr to stream live to your Facebook Timeline, Pages, or Groups.
How to Add Castr App to Your Facebook Group
After you have successfully connected Castr with Facebook, you might need to have an extra setup step of adding the Castr App to the group you want to send your stream to.
In the Facebook group, go to Group Settings
Find the Advanced Settings > Apps at the end of the settings page
Click on the edit button > Add app
Search for Castr in the search box
Click on Castr's icon and complete the adding process
You've finished adding and giving permission for Castr to start a new livestream in your group. If you need further help, please contact our 24/7 support.