Hello,

Here is a video that tells you how to login with Google Account. Hope it could help you.
http://enblog.doit.im/post/48345954644/doit-im-tip-login-with-google-account

And only Google gmail account is supported. In addition, now you can leave a feedback here, so you've login Doit.im with tess.dyer@relationshipone.com. Click on "My Doit.im" and it will go to your Doit.im. If you stick to choosing login with Google gmail account, you will create another new account.

If you have any more questions, please feel free to contact us.

Thank you for your feedback and support.