To publish social messages on Facebook, go to the Nelio Content -Settings » Social Profiles tab and select the Facebook icon.

Once you select the Facebook icon, a dialog appears in which you need to select if you want to connect the profile of a Facebook page or a Facebook group through Nelio Content or you want to connect your Facebook profiles through Buffer.

Facebook Personal Profile
Facebook does no longer allow third-party applications to publish on personal profiles. If you still want to publish on your personal profile, Facebook recommends you to convert your personal profile to a page profile. Follow the instructions here.
Connect Your Facebook Page or Group directly with Nelio Content
After selecting the Facebook Page or Group icon and in case you are not already logged in, a Facebook window will open asking you to log in.

In case you were already logged in on Facebook, a new popup window will ask you to continue with your current user.

Then, a new popup window will ask you to authorize Nelio Content to publish on your Facebook pages or groups.

Select all the pages (or groups) where you want to use Nelio Content and click on Next. Then select the page or group that you’re interested in by clicking on the Connect button.

Once you’re done, the new Facebook profile will be added to the list of Connected Profiles.

If you connected a group, note that Facebook now requires you to install the app of Nelio Content on your Facebook group in order to be able to publish there using Nelio Content. To do this, follow the next steps. Otherwise your messages scheduled to be published on your Facebook group will still fail.
Group admins can locate and install Nelio Content in Facebook by using the Group Integrations interface, which is located in the Group Settings panel of the group’s Facebook page:

Then the settings of the group appear. Go to the Apps section and click on Add Apps:

A new dialog appears where you need to search for the Nelio Content app. Just type Nelio Content on the search field and Nelio Content appears in the results. Then click on it:

Now confirm that you want to add the Nelio Content app in your Facebook group by clicking on the Add button:

After that you’ll see the following confirmation message:

Finally, the Apps section of the group settings shows Nelio Content in the list of installed apps:

Now you can use Nelio Content as you always did with your Facebook groups.
Connect your Facebook Page and Group profiles through Buffer
Alternatively, you have the option to connect your Facebook profiles through Buffer as explained in the following link: