I keep getting a Panda Cloud pop up, saying my account has expired and my computer is in danger. I should be good through 2016. My reference number is 69577355.
You will have to contact the developers of the application, because they are the only ones who have access to the registration details. You need to fill the form on the page linked below and they should answer to you on your email. If there is something wrong with the registration data, a new key will be provided to you.
Contact page: http://www.pandasecurity.com/romania/homeusers/support/contact.htm