This error means that you are logged into the wrong Facebook personal profile at www.facebook.com. Let me explain.
When connecting a Facebook business page or a group, there sets the connection between your Facebook personal profile and PromoRepublic account. This is what we call a Facebook token.
It means that a certain Facebook account gets associated with your PromoRepublic account. It is not possible to associate a certain PromoRepublic account with several Facebook accounts. When doing so, you might be prompted with a pop-up message that there is one attached already. In that case head over to this guide on how to disconnect a Facebook token.
In order to ensure the posting, such a personal profile must be authorized in the same browser at www.facebook.com.
In case you don't know what Facebook profile is the host on your PromoRepublic account, check the settings. In PromoRepublic click on the top right corner, select Settings, and scroll down to the bottom. There you'll see the profile name.
If this is a wrong profile and you want to connect to a different one, hit on the red Disconnect Facebook button and log out. Then go to www.facebook.com, authorize in the necessary profile, get back to PromoRepublic, and re-try posting.
In case this doesn't help, please email us at [email protected].