License Purchase and Activation
Purchase your license
Go to our Gumroad page to purchase a license.
Get your license key
After purchasing the license, click "View Content" and copy the license key.
Activate your license
Go to lichess.org or chess.com and you should see the GM Cheems sidebar. Click on "Activate License" and paste in the license you got from Gumroad. Note: it may take up to a minute after purchasing your license for it to be registered into the system.