I have one iPhone 6 (iOS 11.0.2) and one Nokia 5 (Android 7.1.1). Both of them receive NO push notifcation. Only when I launch the softphone app that it would be able to show incoming calls. The strange thing is that even I have rejected the calls, the caller keep ringing forever. 3CX partner cannot even solve the problem for months. I feel so bad. Switching to 3CX is one of my biggest mistakes ever. It used to be good at first but get worse day after day. Any 3CX staff here?