it says “payment method required” when i try to set up family sharing for apple music. my payment method is already set up via paypal. help! thanks!

PayPal isn’t a valid payment method for setting up a Family Share : Payment methods that you can use with your Apple ID - Apple Support

If you're using Family Sharing and you're the family organizer, you can use the following payment methods:

• Credit and debit cards
• Some additional payment methods available in select countries or regions (Alipay, China UnionPay, mobile phone billing, TrueMoney)