The Program does not work with PPP/PPPoE/PPTP/L2TP connection directly (Modem, ADSL, WiFi, ) .
You need to install the router and configure it for PPP/PPPoE/PPTP/L2TP connection, then connect computer to router by network cable.
If program does not work or work very slow, then you must disable all firewalls, antiviruses and ndis filters.