Card details
In this page (only accessible from the user menu if you are an active owner with a subscription) you can find your credit card details. Here you can see the current credit card used to pay the recursive subscription.
Under this section you will find the box that allows you to change the details of your credit card. In fact, here you can add a new card. If the new card inserted is valid, the next payment will be charged to the new card.
Warning
If the current/new card is not valid at the next renewal the payment will fail and it will therefore not be possible to use Publytics. Make sure you use a valid credit card