Soft rejection.

we have submitted our first codeignitor script in codecanyon. After first submission we received a soft reject and fixed those issues very quickly as our file has only on useful controller.
After that we have submitted the product again. after that we received some issue about different things, then we have fixed those too and resubmitted.

But the problem is, from our 3rd submission we are getting same reply from the 1st and second soft rejection issues. Though we have already fixed those before. and double checked those issues couple of time before re-submission.
What may be the possible reason ?