Often these puzzles are just (each key replaced by the one above or to the left).

Try ROT13: danlwd → qnayjq (no) Try ROT3: danlwd → gdqozg (no)

Check "andrwyd" → maybe "password" in some cipher.

But here, most likely: the person posted a disguised message pointing to a file named "sayfwn-p30download" but the rest is meaningless filler.