Why can't you redirect some urls?
I am getting help from Paypal technical support to track down a strange bug where some users are not redirected after payment to our site for some reason, but most users.
The really helpful support guy at Paypal said this:
We checked these 5 PayKey accordingly, it showed that all customers / buyers were American users. And in AP-6PC49991TU1544250, the return URL was [REDACTED], we visited it successfully on PC (with VPN) but failed on iPhone (we are here in China). To avoid / fix this issue, make sure that this URL can be visited by US users.
I am wondering how it is possible that in some places or devices the URL cannot be redirected to?
It should be noted that the redirected page also performs redirection using the redirect method Codeigniter
.
Update
So Paypal redirects to the page, it gets 302
with the location, and then I guess it redirects to the browser. Maybe some browsers don't support this?
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You may have an error that your intermediate certificate does not match certain mobile operating systems. Personally, I check my SSL client with SSL Checker . HTTP response status code 302 Generic URL redirection method found, but if SSL does not match the chain provided by the issuer and tries to redirect; it will fail. Contact your issuer if you receive this error to add an updated intermediate certificate.
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