1) - 4 860,47 € was my total deposit, plus I have received 2 bonuses 1 215,11 & 729,07, making total amount of 6 804,65 €.
2) I started trading on 03/12/2020 with 1 lot size, increasing size as account grew
I used MT5 platform for trading, not MT4. Even if it would be arbitrage, I do not think...