Adobe TOLD YOU the reason. Please tell us their rejection reason for each picture, so that we can suggest why this might have happened. Please don't make us guess.
All photos show a technical error
If I understood you correctly. you seent images that are just variations of a theme and I suggest that the moderator seelected one of them and rejected the rest as essentially "spam" - i.e., just variations of the same image. In the instructions to contriburors, we re specifically asked not to do this.
Don't send the same theme if they aren't significantly different. You ones here are basically the same/similar!
What are these supposed to be?
Who will buy them?
What will they use them for commercially?
Please read your Contributor User Guide carefully to learn what Adobe expects from contributors.
Better luck next time. 🙂