This looks like a cipher or a coded message. The phrase appears to be a simple substitution cipher, possibly an Atbash cipher (where each letter is replaced with its opposite in the alphabet: A↔Z, B↔Y, etc.) or a shifted alphabet.
So: d → w a → z n → m l → o w → d d → w → "wzmodw" (not English) Maybe it's a different direction? Atbash of "window" is "drmwld" — not matching "danlwd".
d a n l w d w z m o d w
Let me do entire phrase quickly (I'll write original and Atbash result):
v p n e k m
But that’s not proper English. Possibly it's: "window filter skin eye vpn ba link must im" — still messy.
Try ? Or perhaps it's ROT13 (shift by 13): danlwd fyltr shkn eye vpn ba lynk mstqym
s h k n h s p m