Something is very odd here. I mined few hours HAC on the (official?) pool "hacashpool".

On the pool, one moment I had over 92 million :240 HAC unconfirmed, but when I came back half an hour later, it had shrunk to 2 million :240 HAC unconfirmed (Nope, it didn't just become comfirmed and consequently vanished from the unconfirmed column).
Where did that amount go?
Also, my Ryzen 2700X has a significantly lower hashrate than my i5-8159U, which is very unlikely, too.

Either this is a scam or very buggy. Either way, afaik HAC / HACD can't even be traded for other currencies at this time, so currently these coins are worthless anyway.

I think I'll rather use my CPU power on XMR, where I can be sure to get coins which can be exchanged for actual money.