This user forum has nothing to do with phone support.
You have only made one other question about an extension and it was answered.
The reject would tell you the reason why so you can fix that and re-submit or mail the extension in along with a copy of the reject notice or the IRS will not allow it.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**