By the way, as it seems - creatros of this tool are just trying to fool people to get money. On original forum they say:
Public version is undetected by VAC1, but DETECTED by VAC2, VAC3.
The truth is that actually VAC1 were used in first Half-Life and first Counter-Strike. CS: GO uses VAC3 only for all games. PLUS there is overwatch for competitive matches.
So I think Valve uses same technology (VAC3) for ALL games. So if cheat is safe for Competitive - it is safe for any rank. OR if it's not safe - it's not safe for all ranks as well.