Weekly cashback means that at the end of each week, your total winnings are subtracted from your total losses, and a set percentage of the remaining net amount is returned to your account. This is calculated automatically — you do not need to claim it separately.
Note that no cashback applies in a week where you have a net profit. Cashback is only calculated in weeks where you have a net loss. Cashback is paid up to the maximum rate of your tier.
Placing regular bets on slot games at ok777 or staying active in cricket betting builds up weekly activity that helps you move up VIP tiers.