As per your advice I downloaded Community Builder. The goal was to customize the Registration process.

In my particular case, I only wanted a "user name" and "email" to be registered. No name.

When the new user registers his/her email address, the following message appears "Could not check this email. Please double check. Need for confirmation".

Please note that this message appears for valid email addresses.

Even though the new user can continue and hit "submit" and the process works. I would like to turn off this flashing message. Suggestions?

Thanking you in advance.