when I go to http://www.gamesas.com/store and try to add payment method so I can purchase the DLC it tells me

'You need to log in to view this page.

Please use the “Sign In” button on the top right corner to log in.'

I am signed in and it still tells me this. Do i need to create a new account or something? What is the deal I want to purchase the DLC what I am doing wrong?

this is happening to a lot of people, myself included :/