Once you have 'Created a Page' on Facebook, when it comes to working on that page you need to make sure you 'Use Facebook as (that) Page'.

In more simple terms, the page you have created is a bit like another account within Facebook, your FanPages are your 'business' accounts which are attached to your personal account, so when working on your FanPages you need to make sure you are logged in correctly.

Anyway, to make sure you are working on the right page and to 'Use Facebook as (that) Page' follow these instructions.

STEP ONE: Go to 'Account' then click on 'Use Facebook as Page'

STEP TWO: Within the resulting Facebox choose the page you wish to work on:

Following is the description within the Facebox provided by Facebook. You can use the 'Learn More' link to ... Learn More!

New! Select Switch to get a newsfeed and notifications for that page. You'll also be able to interact with other pages as your page. Learn more