old iphone can't login to appstore but can on icloud
i have an iphone 4 that i've successfully logged into with my apple id, but whenever i login to the apple store or itunes, it insists that my account information are all incorrect. i've successfully logged into icloud.com, itunes, and apple music on my pc with my current account information, and yet i am unable to on this particular device.
any help would be appreciated. thanks!
iPhone