I have a little bit confused here,
- first you give a trial period without a chance to get payout at all without purchasing a contract, right?
Yes, you are right!
- then what happens to the mined coins if I can't afford to buy any contract, will it be frozen within the trial periods ends, or they just vanish...
The mined coins will be there till you buy hashrate and get a payout.
I- I'm giving it a try anyway.... if your offer about the free voucher code or promo code still on, I would like to have one..... please
Good luck!
-MZ