To cancel Grok properly, make sure you use the same billing channel you signed...

https://lukasnpyy234.cavandoragh.org/cancel-supergrok-on-iphone-where-is-it-in-settings

To cancel Grok properly, make sure you use the same billing channel you signed up with—whether that’s grok.com/Stripe, Apple Subscriptions, Google Play, X Premium on x.com, console.x.ai for Business, or console.x.ai Billing for API auto-recharge