As far as I know, it's not actually possible for Zcoin/zerocoin to 'vaporize' like you describe it. I tested the minting and spending extensively a while ago and yes, it has some quirks like that "has to have at least two mint coins" error message and the fact that there's currently an artificial limit of 1 spend transaction per block in place (to deal with performance impact on pools because Znodes aren't implemented yet), meaning that it can take a while for a spend to get confirmed and that transactions can be 'floating' in mempool for an unreasonable amount of time... But aside from that, whatever you own, you own. (As long as you don't mess with your wallet.dat...)

So I don't know what exactly happened in your case, but if I were you I'd just take the help zcoinofficial offered you instead of writing rant after rant, which accomplishes nothing.