It's not official pool.
Question2:
It depends on how much HAC / how many blocks that miner has mined.
First there's the standard blockchain confirmation, just like Bitcoin. That takes 5 min max.
Then, there's the pool settlement software that handles how and when to pay out miners.
The WP says this: At present, the rules for mining pool settlement and automatic coinage are: every block excavated counts a statistical period, and settles once, and the mined coins are distributed in proportion to all participating computing power in the period. If there are more than 2 reward shares, 10 blocks will be credited into the account in 50 minutes, 0.2 blocks will be credited in 8.3 hours, and 0.02 blocks will be credited in 3.5 days.
The more blocks that you mine the faster your coins will get confirmed and paid out.
Question3:
delete “hacash_mainnet_data”
1) Thanks for that clarification! I found is that the wallet creation page of hacashpool (wallet*hacashpool*com) is NOT secure, but https://wallet.hacash.org/ is. They look almost the same, so watch out! Don't know how that affects the credibility of hacashpool
2) I got paid, seems like payment is carried out 1x per day by the pool
3) I did, still didn't work on win/linux EDIT: Interestingly, after creating a new wallet address, the block download works. Strange.