Hm, unfortunately I didn't keep my original save, but teleporting back to Karito has him reaping without the key - but by this point I messed with the save enough that it might be a false positive. Anyway though uploaded the save here if it helps! Also managed to break into chapter 7 now, thanks for the hint :)
And no pressure, I totally get it given that the last update was over four years ago, I'd never go back to working on something so old either! But hey, where there's a 5% chance there's hope!! I did also try out the latest Uproar around a week ago and enjoyed it a lot, I think Ace of Rope just has a special place in my heart cause of, well, nostalgia :)