try reset or reboot router? if no luck, contact tp-link hotline, i think.

if wds saying running, which means 1043 is not connected with main wifi now. Only when it says run then they are connected.

try different channel

you can plug the usb driver which has wrong size directly to the router to check it again. If it is showing normal, then it is the problem with hub.

try a different cable and other ports on your modem, if possible. You can troubleshooting like this way, connect wan port of it to another computer and if it still says wan port unplugged, which...

have you tried firmware upgrade and reset? this is very wired, you can also submit a ticket to tp-link support so they can test it.