[Observium] Configuring map interface on new observium installation

Hi,

I have just installed & configured observium for the first time. The first two devices are added and seems working, but I'm having problem displaying these devices on the map. All the time there is a blue sign on the middle on Atlantic ocean, it doesn't matter what I configure as device location.

Please any idea how to configure the map? I have tried all the possible configurations at /opt/observium/config.php settings but with no success. This installation is behind a proxy server, but I have allowed all the traffic from observium host and I don't see any traffic from this host towards proxy server.

thanks in advance, Andi Qirjazi