App downloads

Payment methods that you can use with your Apple ID - Apple Support

Create or use your Apple ID without a payment method - Apple Support

If you can't choose None when you edit your Apple ID payment information - Apple Support

Change, add, or remove Apple ID payment methods - Apple Support

You cannot download free apps without a credit card on record.

Try signing out and then back in.

If necessary, contact iTunes Support. Either use the form or scroll to the bottom of the page in the 2nd link. Follow through the screens to get a chat or telephone option.  You may need to pick a problem that is slightly different than yours to get a chat option.  

iTunes Support

iTunes Support – world wide