You can update the credit card payment details directly in your uAttend account.
1. Login to your account with your Administrator login.
2. Click on the Administrator's name at the top of the screen and select My Account
3. Half way down the Overview list showing, you'll see Current Payment Method, which will show your current Credit Card details:
4. Click Edit on Current Payment Method and then update your details.
5. Please then use the Support link on the bottom of the screen to let us know your details have been updated.