Payment/subscription problems

Any error messages given?

Your payment info is still correct and complete?

Add a payment method to your Apple ID - Apple Support

In the meantime you can also use Apple ID Account balance to pay for Apple Music services:

What you can buy with your Apple Gift Card or Apple Account balance - Apple Support

You can also contact the official Appel Support and ask them to look into your personal data, to find the reason for that:

Contact Apple for support and service - Apple Support

In that case, you’ll have to contact the official Apple Support, only they can resolve that.

You're welcome 🙂

In some cases for other users, the delivery address had been missing in the details for shipping.

After they entered and/or confirmed it, they were able to buy content again.