Probably limited to 25 pages allowed to print.
You may be able to get a reset by contacting Abobe Live Chat.
Adobe Live Chat: http://www.adobe.com/support/chat/ivrchat.html, or as a slight short cut try http://helpx.adobe.com/contact.html?product=digital-editions&topic=usi ng-my-product-or-service Click on 'I still need help' and then you should see 'Chat with an Agent' at the bottom of the page. 'Ask our experts' will indeed just lead you back to this forum. Sometimes you will get ‘Sorry! All agents are busy— please check back soon.’ Don’t refresh the page, just hang on and it should eventually go to ‘Chat Now, and agent is available’.