Atbash of alphabet: a↔z, b↔y, etc.

Better approach: suppose original is English, typed with shifted fingers (each key replaced by neighbor).

is the safest and most direct method. If you cannot access the store, the application is also available through trusted third-party APK mirrors: Download Xd VPN APK Xd VPN for Android Important Note

X(24) ↔ C(3) d(4) ↔ W(23) Space V(22) ↔ E(5) p(16) ↔ K(11) n(14) ↔ M(13) Space P(16) ↔ K(11) r(18) ↔ I(9) o(15) ↔ L(12) Space d(4)↔W(23) a(1)↔Z(26) n(14)↔M(13) l(12)↔O(15) w(23)↔D(4) d(4)↔W(23) Space m(13)↔N(14) s(19)↔H(8) t(20)↔G(7) q(17)↔J(10) y(25)↔B(2) m(13)↔N(14) Space a(1)↔Z(26) z(26)↔A(1) Space g(7)↔T(20) w(23)↔D(4) g(7)↔T(20) l(12)↔O(15)

This garbled keyword is a classic example of – likely someone typing Arabic (or Persian/Urdu) with an English keyboard setting.

A: Because cracked versions often include trojans, adware, or coin miners.

That makes sense as a promotional or piracy-related message: "X-VPN Pro required, direct from Google".