MyChat Server error #70005: user with UIN XXX is not registered
Error
MyChat Server error #70005: the user with UIN XXX is not registered
Error description
If a user with a specified UIN is not registered on the server, then such an error can occur when you authorize a user by UIN and password or with passwordless authentication. It can also happen when executing commands with a unique user identifier.
Problem solution
Make sure that you specify user data on MyChat Server correctly in the user management section.