I am unable to cancel the 2.99 iCloud storage?

Cancel upgraded iCloud storage by downgrading to the free 5GB plan. See instructions in the following Apple article: Downgrade or cancel your iCloud+ plan - Apple Support

This is primarily a user-to-user support forum; other Apple users like you. If the other parts of that don't help, see the following from that same support article:

If you can't tap Done, make sure that you're signed in with the same Apple ID that you use for your iCloud+ plan. You can also try following these steps on a different device. If you still need help, contact Apple Support.

If you downgrade or cancel your iCloud+ plan, the change takes effect after your current subscription billing period ends.1

nconde29 Said:

"I am unable to cancel the 2.99 iCloud storage?: I have tried several times to cancel the iCloud storage subscription and I’m unable to. Can you please assist? Thank you."

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Downgrading iCloud Plans:

Use a Computer:

Perform this using a computer, as it would be more user-friendly doing so.

nconde29 wrote:

I already tried these options and it does not cancel?

See the following from my previous reply. If the other steps don't work, contact Apple by clicking on the blue words:

If you can't tap Done, make sure that you're signed in with the same Apple ID that you use for your iCloud+ plan. You can also try following these steps on a different device. If you still need help, contact Apple Support.