App Store asking for old email instead of current Apple Account

• i went into the app store as a couple of my apps weren’t working smoothly so i thought they needed updating
• when i went to update the apps, it would ask to sign in to an apple account from my pervious ipad, however this email is not used at all of my new ipad
• i then went to the settings to see if i could change anything there to try and updates apps however there was nothing there with the previous account

[Re-Titled by Moderator]

Original Title: my app store says to sign in with an email that isn’t the one that i use on my apple store, i can’t work out how to sign in with my email instead of the other one, when i go into settings everything says the right email