No contact info, no url website : https://www.facebook.com/help/?faq=276329115767498&fb_source=message
Cover images must be at least 399 pixels wide and may not contain:
- Price or purchase information, such as "40% off" or "Download it at our website"
- Contact information, such as web address, email, mailing address or other information intended for your Page's About section
- References to user interface elements, such as Like or Share, or any other Facebook site features
- Calls to action, such as "Get it now" or "Tell your friends"