You must choose an account in the account selector:

Click in the for choices to pull down to and select.
Or, start typing and they'll auto-complete.

Of course, you will need to have added your social profiles in RiteKit or, if you will only be using Buffer or Sendible, you will need to connect one or both of them in Integrations.

Note that no third-party apps are able to publish to Facebook Profiles or Groups anymore; Facebook took this back.

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