I upgraded my 5GB iCloud storage to 50GB storage and its not showing and not only is it not showing but 1.98€ was deducted from my account and not 99¢ as advertised.  I am loath to click again as they may deduct MORE money!? Anyone out there know why my iCloud storage isn't appearing?
The easy way to make sure Apple has provisioned your storage is to sign in to iCloud on a computer with a somewhat modern browser:

https://www.icloud.com/#settings

If the cloud doesn't see your storage, you have a billing and/or support question.


https://support.apple.com/itunes


If the cloud does show your storage, you can get free support using the paid storage as an exception from AppleCare at:


https://support.apple.com/ - choose your device that's not able to get the paid storage.