Sorry for you. With his manipulations he stole 20 BTC from me, but the balance is still positive

That screenshot you posted, that showed withdrawals up to this month - you kept "investing" in scrypt.cc
after he ripped you off?
No, I kept trading and withdrawing, but if I see the game is continuing, shall re-deposit some of my profits back

OK, you kept
trading. Were you unable to withdrawal
all of your "investment", and left with no choice but to sit it out until you could withdrawal everything? (I'm just trying to understand why people continue to gamble with scrypt.cc after they've experienced "badness").
I have had chance to deposit X in March 2015 and 3 months later I had 2*X.
I withdrawed X and kept X.
So, I have now nothing to loss and continue, withdrawing each week
no more than 0.8 BTC

And, as I see, deposits continue, last 10h new 20 BTC here:
Deposits:
https://blockchain.info/address/19mcjofGwKxGwhaZwDwPjdWd1KrFCZgoJJWithdrawals:
https://blockchain.info/address/1Bidh2XFr9JzfXppeZd2cPKpbnJGvqCY4h