https://docs.kinde.com/manage-your-account/profile-and-plan/update-billing-details/
Update billing details for your Kinde account - Kinde docs
Guide to updating billing details for Kinde accounts including invoice email changes and business address updates via support requests.
update billing detailskinde
https://docs.everestforms.net/docs/how-to-update-billing-details-for-wpeverest-purchase/
How to update billing details for WPEverest Purchase - Everest Forms
We changed our payment gateway from 2Checkout to Fastspring from June 2021. So if you purchased one of our products after this date then you should have used
update billing detailseverest