You have to change the payment method if you have received a new bank card or simply want to change the card from which your payments are deducted. This, due to bank secrecy, you have to do yourself.
To change the payment method for your subscription, do the following;
1) Enter the www.baricol.com and tap on "My Account"
2) Log in with username and password
3) Tap the Subscription tab
4) Tap View if you have or have had multiple subscriptions
5) Tap on "Change payment method"
8) Fill in your card details, tick save as favorite for future purchases, and then tap "Pay Buy"
9) You will now receive below confirmation that the payment method is up to date.