In ChannelUnity, navigate to the Billing page and click Payment Information on the left-hand column. Enter the new the card details under Credit / Debit Card Details and then click the Save Details...
Billing
Billing information
To access your billing information in ChannelUnity, click Billing in the main menu. There are five sections: Account History, Channels, Invoices & Billing Information, Payment Information, and Sup...