@HighPingAbuser
Yes, there are many reasons you may be able to claim a code but cannot receive the coins.
Please read the link I provided above.
For example, if you were given a code for a different region, while the code may appear to be claimed, you wouldn't be able to receive the coins.
When you purchase codes from third parties, we cannot verify whether you're purchasing a code that's intended for your region, that wasn't previously used already, etc. This is why you'll need to speak with the retailer about a replacement or refund.