I did not purchase the Magic Piano App.
I did not purchase the Magic Piano subscription app on April 3, 2019. When I attempted to cancel on the confirmation message the site was unavailable and the message was not written in english.
I did not purchase the Magic Piano subscription app on April 3, 2019. When I attempted to cancel on the confirmation message the site was unavailable and the message was not written in english.
Review recent purchases at https://reportaproblem.apple.com/ or check your purchase history in iTunes and view your subscriptions. If you are the organizer of a family share check for purchases by other members.
See also If you see 'itunes.com/bill' or an unfamiliar charge on your statement - Apple Support and About payment card authorization holds from the App Store or iTunes Store - Apple Support.
If you cannot identify the payment then perhaps you are looking at a phishing email. See Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support.
If there really have been purchases that you didn't authorize, or you've entered your Apple ID credentials at a fake Apple portal, see If you think your Apple ID has been compromised - Apple Support, change your Apple ID password, and if possible turn on Two-factor authentication for Apple ID - Apple Support.
See also Use Screen Time to prevent purchasing on your iPhone, iPad, or iPod touch - Apple Support.
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Review recent purchases at https://reportaproblem.apple.com/ or check your purchase history in iTunes and view your subscriptions. If you are the organizer of a family share check for purchases by other members.
See also If you see 'itunes.com/bill' or an unfamiliar charge on your statement - Apple Support and About payment card authorization holds from the App Store or iTunes Store - Apple Support.
If you cannot identify the payment then perhaps you are looking at a phishing email. See Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support.
If there really have been purchases that you didn't authorize, or you've entered your Apple ID credentials at a fake Apple portal, see If you think your Apple ID has been compromised - Apple Support, change your Apple ID password, and if possible turn on Two-factor authentication for Apple ID - Apple Support.
See also Use Screen Time to prevent purchasing on your iPhone, iPad, or iPod touch - Apple Support.
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The Magic Piano App by Smule has no subscription. Its free to download, and only offers in-app purchases which you must manually select to buy.
If you got an email stating you subscribed, it was probably fake.
See here: Identify legitimate emails from the App Store or iTunes Store - Apple Support
I did not purchase the Magic Piano App.