I just had this email about WCG so, if you've changed the email address you use with WCG, then you might not have seen this:
regardsOn August 28 , World Community Grid will be switching from username-based logins to an email-based login system.
As a current volunteer, you will not need to take any action in order to keep receiving work from World Community Grid and you will not need to make any changes to your account.
We do encourage you to make sure that the email address in your profile is up to date by checking at https://www.worldcommunitygrid.org/ms/viewMyProfile.do. And as always, you can contact our support team at email@example.com with any questions.
Thanks for being a part of World Community Grid.
The World Community Grid team