• Cambridge, England
9 Jan 13
When it says "Full Yahoo ID" it means your FULL email address (not just your ID). If you have an issue logging in once you have typed your full Yahoo email address and correct password, it may mean that your account has been hacked and the password changed. First use the 'forgotten password' link and you should be asked to enter the answer to a security question. If that doesn't work (or you have forgotten the security question), then contact Yahoo as soon as possible.