Hi Mike. For product purchases, no Stripe customer is created by default. Stripe customers are created for the Subscription type transaction. You can use this code to create a Stripe customer for a product purchase: https://d.pr/n/2K8QVq
Be sure that the feed name is correct in that code (on line 4.) I believe it is based on your video. Try that and let us know how it goes, or open a support ticket for more assistance: