Can I change my tie when I sell trading cats?

After the buyer takes a photo of the trading cat, the customer service will send the trading information through SMS and APP, so that the seller can trade through APP. Customer service operates in the middle, and buyers and sellers cannot contact directly. The transaction can only be completed through customer service, and the tying can be changed through customer service. Successful tying means that the transaction is half done, and we just need to wait for the buyer to confirm the receipt.