Old users did not fill in the invitation ID when registering before. Too much handling fee? Don't panic, there is a way to rebind now.

1. Fill in when registering

2. You can fill in if you are not authenticated after registration

3. After registration and authentication, if you have not traded for 180 days and have not invited your superior, you can change your superior.

4. If you have missed the above three methods, don't panic, there are other ways (limit speech)! ! ! !

Come and reduce your handling fee, there is a way as long as you need it! ! !