So I've got 2 things here, for the first one after searching for a couple hours and finally spawning it in with a command, I can say with absolute certainty that there is 100% not a spawner added to the creative menu. It simply isn't there. For the second one this mod seems to be incompatible with companion mod (tents and camping) with both mods installed when I try to craft the key it doesn't work, but weirdly when I go to take the ingredients and put them back in my inventory they dissappear completely, and the disappearing ingredients bug happens when I try to craft anything in the game. Anyway I'm on fabric 1.18.2, also love this mod, super cool 😊

Yes I'm aware that the spawner block does not show up in Creative Tab, looking for a fix.
Could you link the companion mod you are talking about? Can't find one which matches your description of it.