Unable to purchase credits

Path: /tutorials/partner-nodes/pricing I am signed in to ComfyUI using my Google account. My credit balance is currently 0.00. When I go to Settings → Credits → Purchase Credits, select an amount ($10, $25, or $50), and click “Continue to payment”, the payment/checkout page does not open and I am returned to the Credits page. I have tried multiple amounts, but the issue persists. Could you please advise how I can purchase credits?