Alternatively, you can login and visit your account page at https://www.wpforchurch.com/account/ and choose the “View Details and Downloads link” under the “Payment History” tab.
View your license by clicking “View Licenses”. We’ll be using this for activation, support, and updates with the WP for Church Sidekick plugin (which you need to download as well for installation later).
NOTE: Both the Cornerstone theme and documentation are included in the compressed zip file named “cornerstone.zip” so make sure that you do not upload the original zip file download as-is or it will not install correctly.