Hi there!
I tried to post my first message to Linkedin, but I haven't managed to achieve it yet.
According your help document, I added a new application to Linkedin and my profile appeared to the Joomla JO Auto Post component. In Default Application Permissions, I checked "w_share" and "basicprofile", while I switched the Application Status to "Live". Note that "rw_groups" and "rw_nus" options do not appear during adding a new application. (I don't need to post to a Linkedin Group).
Then, I composed a Joomla article, and after selecting to be published through my Linkedin account, a message finally appeared after pressing Save, that the article has been saved and posted to Linkedin successfully.
Now, in the JO Auto Post component manager, I can find the post details, where under State it is mentioned that "Post to Linkedin Successful".
I have also verified that the article (or something) has been sent to Linkedin, through the Linkedin API Usage (Post Share is increased by 1):
However, my post has not been published to Linkedin yet. My recent post activity is still empty.
In summary, everything seems to be fine in both component and Linkedin application setup, but the post has not been published.
Can you please help?
Thanks,
Nikos
Joomla! 3.6.4, PHP Version 5.4.45