m s t q y m n h g j b n

d→w, a→z, n→m, l→o, w→d → "wzmod" — not right. Let me do all:

Let me decode systematically:

But I recall a known solution: This exact string appears online as an for "window filter shkin eye vpn ba link mustim" — no. Wait, actually I've seen this before: "danlwd fyltr shkn eye vpn ba lynk mstqym" after Atbash gives: