How do I fix a Stripe redirect loop when customers try to pay on my site?

A Stripe redirect loop occurs when your site fails to verify the Stripe webhook response, causing the payment gateway and your site server to repeatedly redirect the user session back and forth during authentication.

“This one’s almost always rooted in a webhook response that never gets verified, so Stripe and your server just keep bouncing the customer back and forth. I’ll trace it, fix it, and have payments flowing again within a day for $99.”
— Jeff Bollettino, Managing Director, Ignite Conversions