Resolution from Clarizen help team:
When you login to Go using Clarizen One for your first time you must have first and last name in Clarizen One.
For the users that signed up to Go using user/pass, they can now login via Clarizen One.
This is since the problem is only in the first login to Go.
- Those who have previously logged in to Go, can also login via Clarizen One
- Those that failed to login, please make sure they have a first and last name in Clarizen One.
This is a know issue and will be resolved soon