E_LIC_WRONG_OPERATOR error

i am getting this error on both my iphones when i try and download any of my ebooks via bluefire reader.

it is followed by http://acs.libredigital.com/fulfillment/fulfill http://acs.libredigital.com/fulfillment

http://acs.libredigital.com/prodfulfillment

it has happened overnight, was able to download books yesterday without any issue.

can anyone help?