To cancel your ChatGPT subscription, be sure to do it through the same platform...

https://emilioezho292.theglensecret.com/where-is-the-cancel-plan-link-in-the-stripe-portal-for-chatgpt

To cancel your ChatGPT subscription, be sure to do it through the same platform you used to subscribe—whether that’s the web, Apple, Google Play, Stripe, Business, or API