After purchasing Real-debrid Reseller's Code on Real-debrid PayPal Reseller, please follow this instruction to activate premium:
1. Please log in to your Real-debrid account first: https://real-debrid.com/
(If you don't have an account, please register a new account)
2. Premium key / Premium coupon can be used here once you are logged in to your account:
Access https://real-debrid.com/voucher
3. Paste your Premium key / Premium coupon in "You have a reseller's code ? Enter it here" and click "Convert" to proceed.