Thanks for the FTP credentials. You noted that LinkedIn is disabled in the message. Yes, we'll need that enabled to diagnose further since we need to recreate the error.
If you don't want to enable it for a long period, you can also send us super admin details along with how you disabled it (hiding it in the SCLogin module, removing the API/Secret keys, etc) so that we can re-enable it just while we test... and disable it again if it's still not working when we're done.
Thanks,
Alex