Please provide reasons of theme rejection so I can modify it and upload it again
No one is the forums will be able to comment without seeing a demo.
If there was no feedback in the rejection and was simply a hard rejection then the chances are there is too much to cover in detail.
Demo of what ?
A demo of what you submitted.
You would have had to include a working/hosted example of it in the submission
Yes I had already added it
If you want feedback as to what might be wrong then you need to post that demo link here