So final guess: .
Reverse original: blda-yt-ay-jy-lmht Atbash: yowz-bg-zb-qb-onsg thmyl-jy-ty-ay-adlb
Result: "yowz - bg - zb - qb - onsg" .
"adlb" reversed = "blda" . Atbash of "blda" = "yowz" . Not helpful. So final guess:
Result: "gsnbo qb gb zb zwoy" — not clear. then after 2
Put hyphens back where they were (original had hyphens after 5, then after 2, then 2, then 2, then 4 letters): Original: thmyl (5) - jy (2) - ty (2) - ay (2) - adlb (4)