Unable to download or update apps due to billing issues

Re: Why is there something wrong with billing from a previous purchase

and won’t let me download or update an app

We are all Apple users, like yourself, in the Community, so no-one hare has access to your accounts or details to check this out for you. We'd like to help, however. Seems you may need to complete the payment for a previous purchase, in order to start using your account as normal again.

or

If you have disputed a charge from Apple: You may need to contact your financial institution to authorize them to allow you to make payments to Apple again.

See Apple Support's online article (link below) and find out how to pay an unpaid order.

If a message says 'billing problem with previous purchase' or 'verification required' - Apple Support

Else: If needed : See Billing and Subscriptions Support website (info / support / contact options etc.):

Subscriptions and Billing - Official Apple Support