Calculated on Net Loss
Each week, your total winnings are subtracted from your total bets — what remains is your "net loss". ck444 pays you a set percentage of that net loss as cashback, based on your tier.
Cashback only applies in weeks where you have a net loss. If you finish a week in profit, no cashback applies — that is perfectly normal.
For example: a Gold tier member with a weekly net loss of ৳20,000 will receive ৳20,000 × 0.5% = ৳100 cashback. This is the maximum cashback for that tier.