I am using one paypal account to accept payments from 3 of my sites.
All of the 3 sites are using zen-cart 1.3.7, and all of them don't have any paypal patch installed since I upgrade them to 1.3.7 like 1-3 months ago.
3 Sites has been working well for years.
While today suddenly, 3 sites started missing orders information at the same time.
I only installed and turned on Paypal IPN modul on all these sites to accept payments.
Now, I can recieve payments from paypal, but orders not showing up in admin area. And I am sure that I didn't do any changes to the zen-cart files or database around that time.
I am wondering if it's because that I didn't have paypal patch installed. But I am just confused that the patches has been released for a while and my sites were working quite well without these patches. And I don't think 3 sites should get problems at the same time if it's the patch problem.
So I am thinking that if it's paypal's problem. Seems paypal is upgrading its system these days.
Do you guys have any similar problems?
BTW, I am from China and operating sites to do oversea business.





