The Weekly Cashback is a bonus aimed to reward players that had a bad run during a week.
Weekly Cashback is calculated as a percentage of the real net money losses a player incurred during a week, and is credited to the player's account every Sundays between 00:00 and 01:00 UTC.
The percentage of the Weekly Cashback is tied to a player's level within the VIP Program, and ranges from 5% for Level 1, to 20% for Level 30 for your real-money losses from Sunday 00:00 UTC to Saturday 23:59 UTC.
For example, a player that's Level 30 and lost 1 BTC in the previous week will receive 0.2 BTC as Cashback next week.
Needs table with cashbacks levels