Smart Hub App Not Working. Bingo, you should be sorted! I can turn plug on from smart plug, but no wifi at all.
Go to home > settings > support > self diagnosis > reset smart hub. Bingo, you should be sorted! Choose system apps and look for yvservicehostapk.
This will force the smart hub to reset.
Go to support > software update and follow the instructions. Crews have restored power to all remaining members. Smart plug had been working fine for a long time. Make sure you're not in the smart hub and in tv mode.