Both images are underexposed and have soft focus. In my experience, Adobe Stock doesn't seem to like images with such a shallow DOF. They seem to want more in focus throughout the frame.
Too dark, too blurry. Adobe customers come here expecting perfect images for use in their million dollar commercials. See links below. Also Adobe Stock already have millions and millions of flowers available. Maybe you will have better luck in a less competitive category. 😉
Vielen Dank. 🙂