*The following content may be adjusted during the implementation process, please refer to the latest version
The right to interpret the following policies belongs to this education platform

Various policy descriptions

One account can be bound to at most two devices:

When a user purchases a paid course, the system will generate a personal account, which will store the user's purchased courses and other information.
After the user successfully pays, the personal account will be automatically bound to the device (mobile phone or computer) used by the user to purchase the course.
An account user can only log in on two devices at most, one computer (desktop, laptop) and one mobile phone. When you initially purchased the course with your mobile phone, you can also log in to the account with your computer, and your personal account is also bound to this computer. Once logged in successfully, users cannot log in to this account on other devices. So when users log in to their accounts, please consider the device you want to use for subsequent course learning.

Notice!!!

The account is bound to the user's device, so if the user uses a different device, it will be considered an illegal login.
If the user has not changed the login device but cannot log in to the account or the account is shown to have been blocked, please contact us using the emergency email and we will help you solve the problem within 1-2 working days.

Emergency contact email for paying users:deandingnational.urgentcontact@gmail.com