I'm a little unclear on what you're referring to. If you mean that after a user has logged in, we show their email address on the page in the greeting, like 'Welcome This email address is being protected from spambots. You need JavaScript enabled to view it.', there is a setting to change the greeting to use the Real Name instead of the Username. Go to SCLogin > Logout View Settings and update the Greetings option for this.
If this is not the issue you're facing, could you provide more details, step by step on how to reproduce or attach a screenshot and I'd be happy to help further.
Thanks,
Melissa