Why does it say this

It is usually a billing-related issue. If your account has been disabled in the App Store and iTunes, it isn’t something that you can fix yourself. You will need to contact Apple Support. The following Apple article includes a link that you can use to contact Apple Support: If a message says 'Your account has been disabled in the App Store and iTunes' - Apple Support

This is primarily a user-to-user support forum; other Apple users like you.

There's a problem with your iTunes Store account information which can't be fixed from your end. Click here and contact Apple Support when they're open; if the link doesn't have an option for your country, use this form.

(240227)

Hello ~ Go ahead an contact support as this is Apple’s way to let you know that there may be an issue with your account.

If you see a message that says 'Your account has been disabled in the App Store and iTunes'

Contact through link or by going to lower left and click on Support or:

Contact Apple for support and service

~Katana-San~