I selected that option, but the entire method is different. I've been using the original PayPal PHP script from the 1990s when I set up my e-commerce site. It's all hand-coded. That PHP script talks to the PayPal server - back and forth. Meanwhile, I have other PHP code that encrypts my buttons and uses a certificate ID that PayPal gives me - or gave me. My certificate ID expired and I can't get another one from PayPal. That page you directed me to is for a completely different method. It may be "classic" but it's "new classic". I spent HOURS researching this, and it's not the method I've been using. Mysteriously, since getting the new certificate, my payments have been going through - though my certificate ID has expired, I can't get a new one, and I haven't touched my code. I suspect that I'm not the only one using the original PHP code, and not the only one who threatened legal action when PayPal cut off access with no notice. I don't know how long my old code will magically work, so I'm working on a new Web site that uses the new method.
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