I can’t add my card. Because When I press add button, it was “learn more pr cancel” notifications came and i don’t have to learn more

Hi enkh-erdene144

welcome to9 the Apple (user-to-user) Community.

Re: I can’t add my card: How can i add without learn more

Wondering what sort of card you want to add, (credit/debit card / store card / transit card / or etc) and to which app or account / (Apple ID account / to Wallet for Apple Pay / Apple Card)

Eg:

If you want to add a credit / debit card to Wallet to use with Apple Pay:

You might want to check through Apple Support's articles:

Check if Apple Pay is available in your country or region: and, if so, the Apple Pay participating banks

Countries and regions that support Apple Pay – Apple Support

Check you have a compatible device:

Devices compatible with Apple Pay – Apple Support 

Also:

Check that you are signed in (to your device) with your Apple ID:

Sign in with your Apple ID - Apple Support

Check that you are signed in to iCloud on your device(s).

How to: Sign in to iCloud on all your devices - Apple Support

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Then: To add a credit/debit card : How to: Set up Apple Pay

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Troubleshooting if needed:

What to do: If you can't add a card to Apple Wallet to use with Apple Pay - Apple Support

or

If a payment card that you use with Apple Pay doesn't work - Apple Support

If needed:

Apple Pay Support:

Get support with Apple Pay:

Apple Pay - Official Apple Support

All the best :-):