How to Troubleshoot an Outdoor Extension Cable

This year i've swapped. individual smart plugs on my christmas treem for an extension lead. The problem with an individual smart plug is it's quite bulky. So this year i have swapped a. couple of smart plokes, pre labeled christmas tree and christmas lights, m and a remote control. And i bought a smart extension lead which, you know, one thing into the wall, four sockets, two usb ports, all individually controllable. Well, individually controllables, the us bs get controlled as one a. But i figured this is going to be a betther christmas solution for me, because then i just pluck one thing in, and