Amazon payment wallet is not working when display mode is read

We need support regarding the implementation of Amazon pay, which we have used as a payment method for one of our app.

In the wallet when we change the display mode to read, as like below we are getting a wallet screen without the payment method
wallet.displayMode = ‘Read’;
addressBook.displayMode = ‘Read’;

Could you please support us with some information here?

The notification in the yellow rectangle says:

“Please return to the payment page to select a method of payment.”

On the Amazon Payments Europe site, you can find help and instructions how to resolve issues like this: