ZEPETO does not currently support switching from one Premium plan to another (upgrade or downgrade).
Premium Lite, Basic, and Plus are separate products, and you can subscribe to all three at the same time. If you want to use additional benefits, please subscribe to the other Premium plan you need.
If there is a Premium plan you no longer wish to use, please make sure to cancel it manually.
If you do not cancel, the existing subscription will continue to renew and be charged every month.