I'm not sure if you've tried these things already, here is a couple suggestions while you wait.
1. Since you're aware your card is a rebadged Micomsoft , have you tried all the drivers available ?
You get one from Startech, one from Micomsoft and even one from the hardware manufacturer ( Yuan Tech )http://www.yuan.com.tw/en/market/softwa ... driver.htm
2. If it still doesn't work, you can always use your program of choice ( OBS, Amarec TV, ect.. ) to "preview" the video / audio that the card is receiving. While in preview mode , the audio will play out of your default windows audio device and you can easily capture that with bandicam. You might need to adjust audio sync though.