Hello, help to understand why it was rejected? Cause Quality problems. All were in AI generated png

Zoom in 100-200% and inspect every area of your images before uploading. AI frequently messes up chair legs and table legs. Here are a few example of AI drawing errors. There are others.

While it's certainly possible for AI to do complex architecture (interiors and exteriors), one needs lots of luck or a very strong background in editing to fix errors.

You do not need to look very accurately to see multiple rendering errors. 

In the first image, look at the legs on the white chairs on the left side of the table.

1.There is a shadow in the groove in the ceiling.

2.The plants and chairs in the back have unnatural shapes.

3.The building's pillars are warped.

There may be more if you look closely.