Hi Wai Wong,
Prompts from McAfee SecurityCenter requesting that you verify your subscription can have many causes, including issues with your Internet connection or computer settings.
Please check whether the system clock is set right
Log in to https://home.mcafee.com/Secure/Protected/Login.aspx and verify that your subscription is up to date with your current email address or it displays a different one.
Kindly report back if you come across any issue in connection to the above link.