You would like to promote your paper automatically using the auto-promote feature. However, Paper.li is connected to the "wrong" Facebook, Linkedin or Twitter account.
Simply turn the activation switch to the OFF position. Then, visit facebook.com, twitter.com or linkedin.com and sign yourself out. Return to your Paper.li settings, turn the toggle back to ON in order to sign in to the correct account.
The activation switches are found in your Paper Settings > Social Media Agent.