Have you checked wireless network without any security?

UPnP feature is enabled on WR740N? Another solution is enter in DMZ address IP from your host (computer) with torrent client.

Do you have marked "Connect Automatically" in WAN settings?

got the W8961ND few days back and i have this problem cant login to 192.168.1.1 This is problem with RAM memory in the router. Your problem can fix UPnP feature disable. TP-Link support knows this...

No problem for me. I wrote in my signature it's my hobby only :) Greetings from Poland!

If you have warranty time please replace router in the shop