Hi, I figured out a fix for my site—the problem was, I had enabled EWP (Encrypted Website Payments) even though I was using WooCommerce for my site. It looks like you only need EWP if you are using a manual button (more info about EWP is in the link below). Hope this helps! https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/encryptedwebpayments/
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