Sorry I lost track of this one. Looks like the credentials above do not work anymore. Can you pls check once and get back to me with the right credentials? Looks like the username is no longer valid.
Or if you have the latest version of the theme, you can insert the above code to line number 97 of the thumbnail-functions.php file to obtain the same change that was accomplished before. Do let me know if that works for you. Thanks for your patience with this.