Afterpay not working

[AccentRings]

Hi Community.

I have activated the Afterpay payment option and it shows on my Checkout Settings page as connected. However, when I go into my online shop as a consumer and try selecting Afterpay as my payment option, I get a small error message saying "Use a different payment method" and the Continue with Afterpay button is deactivated.

Can anyone explain why this might be happening and how I can fix the issue?

Thanks,

Vanessa