Recover from Google penalty

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
My website is
It is penalized by Google. Around 80% website pages are de-indexed by Google.
I tried rewriting unique & good quality product descriptions, hiring a good SEO service (I got Page rank back using good link building), submitted reconsideration request (I got reply from Google that no manual action from their side is needed and try checking Google webmaster guidelines)
But, my site pages kept indexing & de-indexing. I don't understand what is the cause of penalty.
So, I want help to recover my site from penalty.
As as freelancer, you have to find and tell me reason of penalty. I will provide you more information as needed or pm me for any queries.

Please experienced people bid on my project. I will apply suggestions and if it works only then I will pay to you,
So, please experienced bidders may bid BECAUSE I WILL PAY ONLY FOR RESULTS.

Skills required:
Internet Marketing, Link Building, SEO
About the employer:
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.

$ 70
in 30 days
$ 250
in 7 days
$ 175
in 3 days
$ 70
in 20 days
$ 700
in 30 days
Hire EarnViews
$ 200
in 60 days
Hire seoexpert2211
$ 55
in 15 days
$ 50000000
in 25 days