Hello Nadine! Thank you for your question. I am a licensed computer / tablet professional with over ten years of experience, and I will be assisting you today.I'm sorry about the issue. What happens when you try to update your billing info on the iPad? Is there any error or message?Please reply at the box below. Thank you.
Can you go to Settings app icon, then select option iTunes & App Store
, then tap on your Apple ID account, then tap on View Apple ID and sign in your apple account if prompted
, then tap on Payment Information option
, then let me know what happens when you try to update there. Tap on Done when finished.
Please let me know. Thank you.