Once you have finished your game session, go to the "EXTRAS" section of your account.
You will be able to collect your winnings, which will be added directly to your account:
To check that your winnings have been received, go to the "HISTORY" section:
And click on "BOOSTS" or "Money Maker" depending on what you won:
Your history will then be displayed with the amounts received when you took part in your missions:
In case of Cash winnings, it is added directly to your balance.