iPhone won’t update say family sharing wants a payment but card expired and wont let me add tried some of the information pathway suggested
How do you update payment information have tried multiple times ready not to bother
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To find out what to do if you can't remove your last payment method or use no payment method with your Apple ID, read this article --> Remove a payment method from your Apple ID - Apple Support
Ongoing subscriptions and Family Sharing organizers must always have a payment method present. To edit the cards used for those you may need to first add the new card and make it the primary payment method before removing the old card (see: If you need to change or update your Apple ID payment method - Apple Support ).