Maybe they are waiting for their BCH and BTG wallets to resync after importing the private key before they release the solution. I would.
That's what I was thinking too.
well I had all tools prepared before I even started with that puzzle. But you may be right. The very fact that you yourself didn't have all the tools ready either is a very strong defence that all is legit, I definitely have to agree.
I just wanted to get my doubts out from my chest. I did. So there is nothing I would like to add here, for or against what I said. I am glad it is getting clarified.