Why was this photo rejected?

I suppose it has been rejected for quality issues? You should tell us the rejection reason that Adobe gave you. It may also be IP because I would expect to need a property release for this. It looks like the backdoor to the garden, photographed from the private area.

I agree with @RALPH_L, that the focus is not correct. The focus plane should be on the door, but is before the door, on the trees. The white balance is too cool, and the white elements indeed show no contrast and structure, suggesting that there was clipping in the highlights.

The picture as such does also not convey an interesting message. The door looks renovated, like a modern door and not what was originally in. But to photograph a modern door with no structure with some older houses around is not of great interest. It's even not good as a filler picture for a catalogue. Make your pictures more captivating, if you want to get a sale.

Nb: Why did you add the picture twice? That is not necessary.