I just had a tech support conversation with Apple. It seems as though the problem of the card payment solved by itself naturally. My subscriptions were mostly back in order.
I have no problems with using my iPhone ApplePay when at physical shops outside.
Now when I want to purchase an App, my MacBook says :
Your payment method will be charged for this purchase and your app will begin to download immediately. : Buy.
Verification required.
Click Billing Info to verify your billing information. You won’t be able to make any purchases in the App Store until you verify your billing information. : Billing Info.
Manage Payments
Payment Methods : {my card is here} (Apple Pay)
This is your default payment method. (No warning message)
Edit Payment Information
You will not be charged until you make a purchase.
{my card is here} (no warning message)
I try to buy an app again.
The same screens and messages repeat themselves.
It seems impossible to purchase from Apple App Store now.