It is possible to redeem coupon codes for Repocast.com on different platforms. But you should keep in mind that some of them might not be valid for your order. In such cases, you can try another one. Usually, you can use the same code multiple times to receive a discount. If the coupon code doesn't work, you can always try again after a few days. If you're unsure about the code, you can check for exceptions and special requirements.