Won’t cancel subscription

Re: "I want to cancel this subscription I have and every time I go to cancel it, it doesn’t work

the button just goes dark for a second and then comes back"

Seems when you cancel a subscription, the subscription may still remain accessible until the subscription expires.

You may want to check which date that the subscription period you already have paid for expires.

You can check if your subscription was actually cancelled.

1. Open the Settings app.
2. Tap your name.
3. Tap Subscriptions.
4. Tap the subscription.
5. Tap Cancel Subscription. You may need to scroll down to find the Cancel Subscription button. If there is no Cancel button or you see an expiration message in red text, the subscription has already been cancelled.

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If needed: How to: Downgrade or cancel your iCloud+ plan - Apple Support

More info. / support / contact options:

Subscriptions and Billing - Official Apple Support

Did you follow the suggestions already given:

eg: How to: Downgrade or cancel your iCloud+ plan - Apple Support

If you still need help: what happened when you tried to cancel ... is money owing ?

Cancel my subscription for storage