1. Open the Legends Of Runeterra game and click the account profile menu at the top right of the screen;
2. Touch the account name next to your avatar;
3. You will see two IDs (which contain letters and numbers). The Riot ID format that must be entered when top-up on the Codashop page is Riot ID 1+Tag+Riot ID 2.
(Example in the image= alexa#1210)