Best way to fix this?

Hey guys, so the guy who took my Intelitec panel out to have it rebuilt was too rough I think and when I went to put it back in I immediately realized one of the holes was stripped (it’s a fake wall so the material is nothing). I was able to get a slightly bigger screw and nursed it in there but six months later it backed out because it had no bite anymore. Any ideas on what to do next? I was thinking about gluing a little piece of wood back there to bite into, or maybe just putting some kind of nut but would need to attach it so it doesn’t spin.. there doesn’t need to be much to hold this thing but I figured I’d ask for ideas and see if anyone has a better one than me. Thanks!

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