Do take note that accountlevel upgrade payments are non refundable.
请注意提升付款是不退款的。
2
This feature can be changed at both the AccountLevel and the Product Level. All payment types are available for the give a gift feature.
该功能可以在账户层级和产品层上级更改，并且支持所有的支付方式。
3
Consequently, children of a particular age cannot be expected to master educational material without taking into account their current level of cognitive development.