This error can indicate two different scenarios.
#1 (most common) You don't have an account created in Lua yet
The solution here is to have your agency Lua administrator create your account OR you can create it your self.
#2 (very rare) You had a Lua account before we started using SSO to log in.
To fix this, please email help@CornerstoneGuide.com and let us know you are getting the 1003 error and that you have already created your user account in Lua. We will work with Lua support staff to move your account from the old Lua into the new one.
IT Staff: Please post requests for this into the public group Lua Support.