A tall elevator cabin is in free fall. In this cabin, pressure of gaseous body is different (because value g is different). Equivalence principle will be wrong.

An elevator cabin is accelerating upward. With the roof, a small body collided (came vertically). And after 10 seconds, a second body (the same mass) collided (came vertically also). This situation will not be the same to an elevator in gravitational field (at a standstill).
- P.S.- Some books today say that accelerated motion is not relative.

"Accelerated motion is not relative". It’s a subheading of a book (in Japanese). Yes, time dilation in gravitational field is written to be real (one sided ; not relative). But in many books, it seems to be written that "accelerated motion is relative"

“Accelerated motion is not relative”, ”Equivalence of every frame including accelerated frame”

The two above seem to be inconsistent. These are subheading of books (in Japanese ; published in 1998 and 1999).

On a point mass, inertial force acts only in one direction always. Gravity isn’t so. Equivalence principle will be wrong.

Under every situation, the law of universal gravitation will act.