FYI: I did try the PayPal updated sandbox environment with my App Engine app a few weeks ago, and it seemed to work okay.
An issue was opened several years ago requesting better documentation around these concerns, please star it to increase the priority: https://code.google.com/p/googleappengine/issues/detail?id=5266 Also, another user has opened a new thread regarding this issue, and Nick from Google has responded: https://groups.google.com/forum/#!topic/google-appengine/oinyMmcoWOg -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/209d6995-2988-48b4-ba99-fc836fc0d657%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
