iCloud+ subscription payment problem
On 12/12, on my iPhone 6s, I received a message in Settings that states there was a problem with my iCloud+ subscription payment. It states I should update my payment details to keep my storage plan. I have not changed my card, it hasn't expired, and I have money available. Is this real, or a scam? I want to continue my subscription, but I am unsure about it. Help!
iPhone 6s, iOS 15