How to retrieve my apps after a crash?

[AC Question]

Hi,
After a crash of my Galaxy S3, I had to re-initialize the Android OS. So i lost all my Apps.
When I try to download them from Google Store, the system says it cannot download them because they are already installed.
What can I do ?
Thanks for help

 

[H3aTeRzz]

What do you mean by, "re-initialize?" Do you mean you did a factory reset?

 

[GD61]

Yes, the repairer did a factory reset.

 

[B. Diddy]

Are you trying to install them using the Google Play Store app on your phone, or the Play Store website on your computer? Use the app.