We could not activate Battlefield 3 Limited Edition on this computer

I started facing this error couple of days back while playing on Windows PC
I researched this error on net & found many solutions.

> delete the dlf file from License & restart the game.
> clear EA app cache

> repair the EA app

> reinstall the EA app

> re-install both EA app & game 

> re-install the game & EA app on a different user account

All these troubleshooting did not help.  I recently started playing the game after so many years. First problem started with playing on punkbuster servers. It gave me error like "kicked by puckbuster" even though I am playing on a basic PC. That time also I tried many troubleshooting steps but none helped. SO I started on non punkbuster servers. Then this error popped up. 

I am fed up with these constant errors from EA with no 100% direct solution. I will suggest that EA to stop making any more new games & start fixing these errors. I put so much money in these games but end up not playing the game.

EA should refund the money for the harrasment it is causing.

Sorry, I got carried away. Anyone having any solution apart from the ones mentioned is more appreciated.

Thanks