It's easy to update your billing credit card through Floranext. Note that we cannot accept bank account information for billing purposes, only credit cards.
In your Floranext dashboard, just hover your cursor over the "person icon" or account menu icon in the upper right and a click Billing in the dropdown menu.
Now click New Card in the upper right and fill out the form. Click Save and your card will be verified immediately.
NOTE: If you have an unpaid balance, your card will charged after saving.