Hello, I studied this and this documents and I find certain contradiction with this discussion. Could you help me out, please? I set up my subscriptions this way: , where Pro (annual or monthly) offers most of the features and Mobile Pro (annual or montly) least of the features. Do I get it right, that: Upgrading: to annual: What happens here? to monthly: [link] The customer’s prorated payment from lower level subscription is refunded to the original payment method. They’re charged for the higher level subscription, which goes into effect immediately. Downgrading: both annual and monthly: [link] They’re charged for the lower level subscription on their next renewal date. They continue using their current subscription until then. Crossgrading: to annual: What happens here? to monthly: [link] ...the crossgrade goes into effect on the customer’s next renewal date. They continue using their current subscription until then. Thanks.