The absence of the "adobe stock" hologram in some images.

Hello. Yesterday I uploaded an image of the texture of the stone wall, and already this morning the photo was checked and accepted, which undoubtedly pleased me, because recently the acceptance rate was, so to speak, not particularly high, but the question is different. Upon a detailed examination of the photo in the showcase, I found that it lacks the holographic protection of "adobe stock". At first I thought it was just hard to see, because this phenomenon can be traced in some pictures, but on closer inspection I realized that it was not there at all! Then I looked at very old photos of the texture of the bricks, which I sent one of the first three years ago, and saw the same picture, the protection is completely missing.

Can you comment on this?