Did you use apex_page.get_url to generate the URL? Also, check the following settings in your app/page which might prevent you from reusing the existing session:
Deep Linking = Enabled
Rejoin Sessions = Enabled for All Sessions
Page Protection = Arguments Must Have Checksum
If you use the new Send Push Notification process, I believe APEX will handle the session for you.
Mateus Utzig
Hey, Plamen. I have a question about sending the push notification from the server. Im sending with the p_target_url, to a page on my app passing a item value, but i can't keep the session state if the user is already logged on, is there any way i could do this? Would be great if you could help me! Thanks!