Weekly cashback is calculated on your net loss — total losses minus total winnings for the week. Each VIP tier has a fixed percentage rate. At the end of the week, cashback is credited to your account based on that calculation.
Consider your total bets for the week — once wins and losses are settled, if there is a net loss, your tier's set rate applies to that amount.
This example shows the Gold tier benefit for that week. The actual amount depends on your net loss for the week.