"La petanque" creates an account when you connect to the multiplayer mode.
It can store data on your progress in the game such as your levels or your rankings in this account in order to connect players and to avoid cheating situations.
It does not collects no sensitive data such as your email. No data is transmitted or resold.
This account is linked to your "GooglePlayGames" account (on Android) or "GameCenter" account (on IOS), which allows you to save your solo progress and display classic rankings.
You can delete your account of the game directly in the "GooglePlayGames" or  "GameCenter" application.
You can delete your multiplayer mode data directly in the app as described below:
In the main menu, go to the "My account" menu, then at the bottom go to "My data", then at the bottom you can delete all the data kept online by the game.