Hello,

Click My Account---Bank Card Management---Delete.

However, the bound card cannot be deleted, only the guaranteed credit card can be deleted.

To increase the limit, you need to authenticate all three, namely credit card, Weibo, and corporate email. The first two are relatively simple. The latter requires a business email to be authenticated, and a business email can only be authenticated once.

Attachment: Corporate email account

Hope it is helpful to you!