Login your account, please make sure input correct registration email address (or member ID) and password. You should distinguish the case sensitive of your password and check that the caps lock light on your keyboard is open and make sure that there are no extra spaces in your password. Other solutions may include:
1. Delete cookie or change browser.
2. Try the password retrieval process.
3. If you encounter an error message, "sorry, you are not authorized to login to this account", please contact our customer service.
In addition, please check your email inbox and do not miss important information about related accounts.