I can't update any apps
I can't update any apps because it is still asking for my old apple id which doesn't exist anymore and I even logged in to my new apple id on the app store yet it still asks me for the password for my old apple id. And none of my old passwords work for that old apple id because obviously it doesn't exist. please help me figure this out because I have 67 apps that need to be updated and they are making my phone really slow.
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iPhone 6s, iOS 11.2.1