Attention all #SocialMedia Managers. There's been a change to the way Facebook recognizes your page versus your own profile page. We actually noticed this a few weeks back in terms of Viewing Your Friend's Pages on the News Feed but this post from Social Media Today will give you the full run down on all changes.
"If you manage a Facebook business Page, you likely noticed a change in how you’re able to access and interact with Page content and other Pages when acting in a business capacity. Basically, you can’t log-in as a Page anymore."