You do not need to create an account. Just login with your existing LinkedIn account.
The Project Forums team.
We continue working, and now you can easily Login with your Facebook account or Google account.
Issue with LinkedIn: If you have commas on your name like "John Smith, PMP, CSM" or similar... it might not work properly. Please try the Facebook or Google options while we work on a solution.
We have reports that the LinkedIn authentication is not working properly, we'll disable this module by now for further investigation. All other login option seem to be working fine.
Thanks for understanding.