Hello,alexg!
Problem solved!,It’s the problem of local server, I tested on a online server,it work perfectly.I think the IPN won’t work with a local server.
But I still confused a little bit,WHY IT USED TO WORK? I’m sure I used to test on my local server it ever works,but of couse,it’s not a serous issue cause the website will run online finally.
I suggugest to add this proble in FAQ,I think it’s worthwhile.
Regards
James