First of all, this is also the most direct way to enter Tian Tian Fund Network. There is a "customer service" in the middle of the right side of the interface. You can contact customer service staff for consultation.

Generally speaking, the account cannot be changed after application. At this time, you can apply for a new one, and the previous account will be invalid.

Some accounts can only be applied by one person. Cancel the previous account before reapplying.