Why this AI art not accept ?

You should always give the refusal reason that Adobe provided. That may help looking in the right direction.

Not only that the windows are poorly rendered as @daniellei4510 points out, but you also have multiple other rendering errors and washed out colours. This was an easy refusal for the moderator.

If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html