Westell .. eeps .. not the best brand to use UPnP setting on. Westell tends to be unreliable for UPnP.

UPnP can stop functioning properly if you have too many incomplete files flooding connection or other things interfering with LW's communication with the device. I insist, try the options I suggested earlier. Manual connect & also purge your incomplete folder. I sometimes get connection issue. I turn to manual connect & wait a few mins for LW to settle before connecting. I attempt several times & it usually works. Purging incompletes will refresh your LW unbelievably so.