Normally, these items take 24 hours to be delivered to your character. Unfortunately, recently we have been having issues with these items taking longer than normal to show up to the character. If after 3 days (72 hours), you still haven't received your items, then we can look further into this issue for you.
For this, simply send in a ticket below, and make sure to include a screenshot of your account page, showing that the coupons were claimed.
Thank you for your patience, and our apologies for the inconvenience.