Unable to proceed payment

Hi,
I have integrated paypal smart button with woocommerce. I have done all the API integration. It went well with the sandbox mode, but when I switch to live mode with API integration for live mode, I always get the ‘unable to proceed payment’ when redirecting to paypal from every button. I’m from country where paypal doesn’t support credit cart payment. I use the same currency on both paypal and website.

Thanks

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