When you purchase a Sumdog class subscription, it will be automatically assigned to the class which is listed in the purchase order.
However, if you changed classes or you would like to assign the subscription to another class instead, you will be able to move the subscription using your teacher account.
Note: If you have a grade/year level or school subscription you will not need to do anything. The subscriptions will be automatically assigned to the students in the subscription grade/year level or to all the students in the school (excluding those in the Removed folder).
These instructions explain how to move a subscription package from one class to another.