Zy... — Download- Nwdz Fydyw Lmdam Msryt Mlbn Frfwshh

What if it’s a Vigenère cipher? The key could be hidden in “Download.” D=4, o=15, w=23, n=14, l=12, o=15, a=1, d=4. Running that through…

I tried the obvious: Atbash cipher (A↔Z, B↔Y…). First word “nwdz” became “mdwa”—nonsense. Caesar shifts? Rot13 gave “ajqm sqlj…” Nothing. Download- nwdz fydyw lmdam msryt mlbn frfwshh zy...

“lmdam” (l→g, m→h, d→y, a→v, m→h) → “ghyvh” — not right. So maybe not a simple Caesar. What if it’s a Vigenère cipher