If N/A is showing in all the connection stats then this means a modem_stats.log has not been created.
As all the four boxes on the right are green then I'm going to presume that your scheduled task is created and enabled, so we have some things that we need to check.
1. That the scheduled task is created properly, and set to run HG612_Run.exe located in the same folder as the GUI program.
2. That nothing is blocking (IE Antivirus/security settings) the following three programs, also all located in the same folder. HG612_Run.exe, HG612_stats.exe & HG612_current_stats.exe. You could try running these manually one at a time and see what happens.
3. That your firewall is not blocking telnet access to the modem.
4. Your modem IP address and details are set correctly on the modems settings tab.
Hopefully one of the above will solve the problem.