It is a standard USB cable but one end is USB B plug. You might have one around. You usually find them on computer peripheral devices like a printer. It is unlikely that the cable just died. Unplug both ends and plug it back in. Since everything was working and suddenly doesn’t work, I would be looking at my software. Shut them both down then start the TIU then start the Wi-Fi. Look at system setting and see if it is trying to connect to your TIU.
To get to system setting, from the Home screen tap "more" on the bottom right. Now select Advanced Features.
