Srt H-hym Swpr Mryw -
mryw: m (13) ↔ n (14) r (18) ↔ i (9) y (25) ↔ b (2) w (23) ↔ d (4) →
So — still obscure. Alternatively, treating it as a simple shift cipher (ROT-N) . Trying ROT13 (common in online puzzles): srt h-hym swpr mryw
s (19) ↔ h (8) r (18) ↔ i (9) t (20) ↔ g (7) → mryw: m (13) ↔ n (14) r (18)
ROT13 gives feg u-ulz fjce zelj — no clear sense. srt h-hym swpr mryw