You can use your Google, Facebook or Soundcloud account to authenticate to our sites. To enable this feature you have to enter your Google, Facebook or Soundcloud username/id, to connect your Image-Line on-line account to your external Google, Facebook or Soundcloud account.
You can also use your Google Apps account id as your Google id, even if it is not @gmail.com email address (but needs to be a Google Apps account). Please go and read the article in the knowledgebase for more information.