i got soft rejected because of 
- The localization file should be in English and delivered as .POT file. .POT will contain all translation strings. .POT file name should match the themes-slug. http://envato.d.pr/wsuP/iClp0m9r
For just only this one reason - i have delivered .po and .mo - but i am confused with what is .pot file and do you think i have to wait for next 3 days more for only one reason?
POT – Portable Object Template. This is the file that you get when you extract texts from the application. Normally, you send this file to your translators.
PO – Portable Object. This is the file that you
receive back from the translators. It’s a text file that includes the
original texts and the translations.
Best of luck for approval 
Okay can i rename my file from .PO file to .POT?
No, check on github for WordPress Blank .pot, there’s a repo there with full instructions and a file to get you started.
you can generate new .pot using using Poedit