This is why I was selling this version to only 2 buyers, so they can have profit too. If I won't find the second buyer, I will release a public free version in about 1 month,
so first buyer will have time to make some profit.
So, do you mean that buyer who paid 0.5btc actually is kind of one month subscription? Then only big miners worth to do so... All the best to you to get second buyer.