is your 1043ND V1 or V 2? V1 is 4 address format in the wds, which requires your main wifi router to support 4-address format as well. But if you another tp-link is 3-address format, then it can wds...

yes, we can connect 8200nd to USB 3.0.

is your own Wi-Fi a 5Ghz network? try different channel on the router if it is 2.4Ghz?

anyone try this beta firmware before? http://static.tp-link.com/resources/software/AP500_un-up-ver1-0-0-P1_20160607-rel48929_.zip

have you verified the wireless name and password? and also if there is mac filtering enabled, repeater will fail to connect. If everything is find with router, it is suggested to contact repeater...

windows 10 has build-in driver for 823N V1, but if that didn't install automatically, we can try windows 8 driver. http://uk.tp-link.com/win10compatibility.html