I appreciate you help 
Thks for cross-checking internally your findings.
I did rebuild the iOS certificate, replace, ... but no success unfortunately.
Therefore, anything you guys found out that would give me some directions where to look into is welcome.
Thk you again for your patience,
Eric
Hi again
Checked and confirmed - Illya has specified incorrect provisioning profile (it was the one for exporting .ipa, not provisioning profile for push). Sorry for confusing you!
Could you clarify if you have two pairs of provisioning profiles/certificates?
Hi again
thks for your prompt feedback with direction. Let me check (tmrw, it's late here already).
enjoy end of the wk