Elite suddenly cannot connect to internet

My Doorbell elite was working ok for 2 years but few days ago it cannot be connected. Nothing changed in the network. It cannot connect to internet whatever through wired or wifi network. I understood network and went through all try and test on the network. My network runs perfectly and all power connection and network accessible. Strange is that using iPHone has no problem connecting internet. So it seems it is Ring server and any reasons that I need resolution quick. I have no doorbell now.