Try shift -5:
Given the puzzle’s appearance, the most likely intended solution is that this is . Let me test that: rwayt myhaf wfysl kamlh bdwn rdwd mntdy ghram
“marhg ydntm dwdr nwdb hlmak lsyfw fahym twawr” — doesn’t ring a bell. Try shift -5: Given the puzzle’s appearance, the
Given it’s a puzzle from a forum (“mntdy ghram” could be “mystery gram”? But “ghram” is close to “gram” and “mntdy” could be “monday” with shift? Let’s check: m→m (0), n→o (+1), t→n (-6?), no). rwayt myhaf wfysl kamlh bdwn rdwd mntdy ghram
r → q w → v a → z y → x t → s → “qvzxs” (no)