Try (A↔Z, B↔Y, etc.) on first segment thmyl :
Try ROT13 on thmyl :
It looks like the string "thmyl-snab-tywb-andrwyd-42-2" is likely an encoded, scrambled, or placeholder identifier — possibly a cipher, a hashed key, a username, a session token, or a test value.
t(20) ↔ g(7) h(8) ↔ s(19) m(13) ↔ n(14) y(25) ↔ b(2) l(12) ↔ o(15) → gsnbo (not clear).