Hi I did an integration using Smart Buttons. Just simple iframe solution with javascript setup. It has 2 options: paypal payment and credit/debit card payment. Paypal payment works fine. However debit card not. Note: With a sandbox account both methods are fine. It is related only to live integration. So, when I click Debit or Credit card I see loader forever. From network I found that paypal does request to the next link and wait for 2 minutes a response: Request link: https://www.paypal.com/checkoutweb/inline?sessionID=...hidden... Response in 2 minutes: -- Error 503 first byte timeout first byte timeout Guru Mediation: Details: cache-lcy19231-..(phone hidden was here, cannot provide full details) Varnish cache server
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