vpilot 3.4.7 Unable to see [Controllers in range], also ATC unable to see me on radar screen

[Constantine Jin]

After updating the latest version of vPilot(v3.4.7), the first several flights are all OK. But when I was on short final of KBOS on my Fenix A320 in MSFS, the ATC told me that he lost my radar contact. I've restarted my simulator and vPilot, and tried other aircrafts like PMDG B737-800, however nothing changed. I can hear the voice from ATCs and other pilots (and they can hear me loud and clear as well), but the ATC said he can't see me anyway on radar, and I cannot find myself on SimAware - Real-Time VATSIM Flight Tracking neither. Also I cann't see other traffic as well (I guess they cann't see me as well). 

[Trevor Hannant]

Disconnect, hit Connect again and make sure the Observer box isn't ticked on the connection popup

[Constantine Jin]

I think I've found the reason. The vPilot server in ingapore might be overloaded...