I want to support multiple subscription tiers (silver, gold, ...) for my Android App. The subscriptions grant a monthly token quotum, consumed by using the apps features. Different tiers grant different quota. I use the RevenueCat Paywall.
I have set up the different subscription tiers each with their own entitlement and currently have a single offering for all tiers.
I want customers to have only one subscription at a time, but have the ability to upgrade/downgrade the subscription tier. How would I implement that?