No, you just need to make a phone call or set up the internet. When opening a credit card, it is opened by telephone and online banking, and there is no need to sign a contract. Online consumption is set in online banking or telephone when opening a card.

Also, to open a card online, you must choose the relevant options of online banking before you can use the electronic payment function.

Your problem may be that you didn't open the card. You can call customer service to open the card or password, so you'd better call customer service to ask.

Also, it should be noted that the counter of the bank does not accept other credit card services except credit card withdrawal and repayment. To modify passwords, settings, online banking, online consumption and consumption quota settings, you must call customer service or modify credit card business online.