How to restore access to a disabled iCloud data?
If you go to https://appleid.apple.com and log in - pay attention to see if you get a message like "This Apple ID has been disabled for security reasons". If not, you can ignore all the emails and just make sure you know your security questions (perhaps choosing new ones if someone is trying to guess your account). If so, your account is locked. There are steps to fix it are here:


http://support.apple.com/en-us/HT204161


If you truly can't make sense of the instructions, you can contact Apple ID support and a human can help explain your situation if needed:


http://www.apple.com/support/appleid/contact/