You can change billing payment and billing contact information within vintrace. For example changing your credit card details or the email address you wish receipts to be received.

Login to vintrace from the desktop browser and navigate to Setup > My account > Configure (under Subscription & Billing)

 Click Update payment details as highlighted in the screenshot below.

 A new page will load you into the billing portal. Click the change Icon on the respective details you want to change. You can also download old receipts and check outstanding balances from this view.