Adding data sources for desired integration is quite easy.

You just need to go to the Sources page, click on the integration you want to add, and click on the + button on the right. 

See screenshot below:

You will now be taken to your profile within the source you want to add. In this case to your Facebook profile. 

Additional Notes

Some integrations (like Rank Ranger) require you to enter the authorization token. 

Some integrations needs you to have access to API of application in order to get them connected to Reportz

To do that you need to find your API / Token key in specific application.
You can usually find them on settings page of application
Example
Here you can find API for Rank Ranger or to API SemRush 

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