- Coupon rewards can only be earned once per account.
- Coupons that have expired or have already been used cannot be claimed.
- If an invalid coupon code is entered 10 times in a row, you will be unable to enter new coupon codes for 1 hour.
- Upon successfully entering a coupon code, the rewards will be sent to your mailbox. Rewards may take a while to arrive.
- If you encounter an issue while claiming coupon codes, please contact Customer Support.
- For more event details, please check Official Forums for The Seven Deadly Sins: Idle Adventure.