TL;DR
Yes! You can use your Streaming Reward card for an existing subscription by replacing your current payment method with the virtual card.
Full Explanation
Absolutely — if you’re already subscribed to a streaming service, you can still use your Streaming Reward card 😊
All you need to do is update your payment method:
Log in to your streaming service account.
Go to the billing or payment settings.
Replace your current payment method with your Streaming Reward virtual credit card.
Your Streaming Reward card works just like a regular credit card and will be used for future subscription payments once it’s added.