DI-245 not detected by example program

DI-245 not detected by example program

Hi,
I am new to this type of programming. I am working on writing a customized software for a device built using DI-245. I started with downloading the DATAQ Instruments library and loaded DI-245 example project in Visual Studio 2017 on Win10. It compiles and runs without any error. However, it is unable to detect the device connected via USB. Can you help me figure out what am I doing wrong?
Just to give an idea, this is a research project and the device detects air flow rate and time; the air flow occurs after short and irregular pauses.
Thanks,
kr