If Apple charged you for a SuperGrok subscription, visit...

https://iris-wiki.win/index.php/If_I_Delete_the_App,_Does_It_Cancel_My_SuperGrok_Subscription%3F

If Apple charged you for a SuperGrok subscription, visit reportaproblem.apple.com to request a refund. Simply canceling the subscription in iOS Settings under Subscriptions won’t refund your payment