Apple Pay button not clickable in Safari for some users

Hello, We’re seeing an issue where the Apple Pay button is visible in Safari but not clickable for certain users, while it works normally for others. This happens on our site (https://store-qa2.enphase.com/ ) as well as on other sites for the same affected users. Currently, we display the Apple Pay button based on the following condition:

Boolean(window.ApplePaySession) && ApplePaySession.canMakePayments();

For affected users, the button shows up as expected, but it’s not interactive. All users (both affected and unaffected) are on the latest versions of Safari and macOS/iOS. Could someone clarify what additional conditions Safari/Apple Pay requires for the button to be fully functional? And under what circumstances could it be visible but not clickable?

Apple Pay button not clickable in Safari for some users
 
 
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