Bank of Communications credit card can't add WeChat. At present, the bank credit cards that WeChat supports binding are as follows:

Let's take Apple's version of 6sp WeChat 6.3.22 as an example. The steps for WeChat to bind a bank credit card are as follows:

Step 1: Log in to WeChat, click "Me" and then click "Wallet", as shown below:

Step 2: Click "Bank Card" again, as shown below:

Step 3: Find the "Add Bank Card" below and click to enter:

Step 4: After adding the bank card, the payment password page will pop up. After entering the password, the following page will appear, fill in the cardholder's and his own credit card numbers, and click Next.

Step 5: After completing the above steps, you will jump out of your bank card type and fill in the reserved mobile phone number of the bank, as shown below:

Step 6: After clicking Next, the background will send a verification code to the mobile phone number reserved by the bank, fill in the verification code, and click OK to bind.