When signing up for an account a Google account is required to properly authenticate.
The license is then tied to that Google account and the application will authenticate in a similar fashion.
When you first launch Kiwi are prompted to add an account. The first account added will be the one used to authenticate with our licensing servers.
If properly authenticated, you will see no error and will be guided through the setup process as normal.
If there are any issues, an appropriate error message is displayed allowing you to take appropriate action.