@skinai-e41e43 unfortunately it seems there was an issue with your latest screenshot upload (I just see a grey rectangle). But here is some general advice:
Within a Subscription Group, you can define Subscription Levels, which will determine the upgrades, downgrades, and crossgrades available within a group.
Here is how Apple considers Upgrades, Downgrades and Crossgrades:
Upgrade. Someone purchases a subscription that offers a higher level of service than their current subscription. They’re immediately upgraded and receive a refund of the prorated amount of their original subscription. If you’d like people to immediately access more content or features, rank the subscription higher to make it an upgrade.
Downgrade. Someone selects a subscription that offers a lower level of service than their current subscription. The subscription continues until the next renewal date, then is renewed at the lower level and price.
Crossgrade. Someone switches to a new subscription of the equivalent level. If the subscriptions are the same duration, the new subscription begins immediately. If the durations are different, the new subscription goes into effect at the next renewal date.
Source: https://developer.apple.com/app-store/subscriptions/#ranking
Note that by "higher level of service" or "lower level of service", Apple are referring to the relative Subscription Levels of the old and new subscriptions.
Here are some additional resources which might be useful:
