Can’t use my own Apple Cash/Debit card for in app purchases

👉 Sign in to your Apple ID account page and edit / update your Apple ID details.

https://appleid.apple.com

• edit your billing addres.

👉 or To change the billing address you can do (macOS & Windows OS) via iTunes

Start Music -> Click on iTunes -> side bar click iTunes Store -> go to Account (top bar) -> View Account -> Sign in -> Apple ID Summary -> Billing Address -> Edit.

👉 or (iPhone & iPad) Go to -> Settings -> tap your Profile -> Payment and shipping -> Change Address.

Edit the Address -> tap Done.

Get more support:

• Call Apple in your region see: Contact Apple for support and service

Contact Apple for support and service - Apple Support

• or Contact Apple Support -> Get Support (apple.com)

Have you also try the 2nd and the 3rd option in my previous post?

Get more support:

• Call Apple in your region see: Contact Apple for support and service

Contact Apple for support and service - Apple Support

• or Contact Apple Support -> Get Support (apple.com)

Your screenshot is the wrong screen.

Read my previous post.

I tried the 1st and 3rd options

It would take about 1 to 3 business days in order to process.

Check next week again.