UPDATE (March 8th) Mastercard Credit Card Site Refresh Our Mastercard Site is getting a refresh! Our Mastercard credit card site (in online banking) is being updated with new features and an improved interface to help you easily manage your account. For members who are logging in for the first time after the site is refreshed, you will have to register your card. It’s an easy process, so have to have your card number handy. For any question feel free to call 661-327-9461