Why can't Niu Qian, the seller of Taobao, see which product your customer is browsing?
You can see my application without clicking on the plus sign in the upper right corner of my name.
Then apply the second trading point in it and choose only one of them. If you don't show the origin, it's a network problem, and then change it back to see which one you like.
By default, the sub-account of the main account should be set by itself.