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It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words. 

Please understand this is a public forum: While attaching a Screenshot, do not provide any personal credentials, such as IP address, Card detail, email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable, etc.

With the limited information that you have provided, It is hard to even guess the problems faced by you. 

You may get faster and better responses to your query by --> Writing an effective Apple Support Commun… - Apple ...

Please re-post with detail so that someone else can help.

If you can't add a card to Apple Wallet to use with Apple Pay

1. Contact your card issuer to see if they support Apple Pay.
2. Update to the latest version of iOS or iPadOS, watchOS, or macOS.
3. Make sure that you are in a supported country or region.
4. Check that your device is compatible with Apple Pay.

If you can't add a card to Apple Wallet to use with Apple Pay