@woozle ah fml, the problem is channel indeed. Thanks for helping me. I just hope the wifi on cafe i usually go to could be detected, if not i would try to return the dongle and buy another brand's.

@woozle it did not detect any. I tested by turning on my other family members' hotspot and the dongle did not detect them as well The model is US

I just bought the dongle and it arrived today. I've installed the firmware and it shown on the Device Manager. Bluetooth works no problem, but my 2.4 ghz wifi hotspot can't be detected. I try to...