If an empty card is bound to WeChat, you may not be able to pay when using the "scan code payment" function. This is usually because the bank card is not bound or the verification fails.

To solve this problem, you can try the following methods:

1. Bind a valid bank card on WeChat and set it as the default payment method. In this way, when using the "scan code payment" function, WeChat will automatically select the default bank card for payment. You can pay by WeChat-> Wallet->; The bank card is operated.

2. If you have bound a valid bank card, but you still can't pay, please confirm whether the scanned QR code is correct. Some merchants may use expired QR codes or wrong payment links, resulting in payment failure.

3. Check whether the network connection is normal. If the network is unstable or abnormal, it may affect the payment process. I suggest you try again in a different network environment.

4. If the above methods can't solve the problem, please contact WeChat customer service for consultation or help. The customer service phone number of WeChat is 95588. You can also click "Help and Feedback" in the upper left corner of the WeChat payment page and select "Contact Customer Service" for consultation.