The current Knowledge Base article details the process of changing your billing information reflected on the invoices from your TourOpp GO! subscription.
Solution
1. Go to https://www.go.touropp.com/manage-subscription and enter your email address, then click Continue.
2. You'll get an email with a one-time passcode that you'll have to enter on the next screen, then click on Login:
3. On the next screen, click on Billing & Shipping Addresses:
4. On this screen you will see the billing information we have on record for your account and you can click on that box to edit it:
5. On this screen you'll be able to edit this information and once you're ready don't forget to click on the "Update" button below: