Thanks for providing error log, Sorin.

One of Ossn's prerequisites is to have the PHP Zip extension enabled (see https://www.opensource-socialnetwork.org/wiki/view/706/how-to-install-open-source-social-network)

And it seems your server has this extension disabled. Please contact your provider's support for more help on this subject.

Please knows someone?

Error :

Fatal error: Class 'ZipArchive' not found in /home/tunnedr2/publichtml/rdrm/classes/OssnComponents.php on line 68

unsolved

Please refer to https://www.opensource-socialnetwork.org/wiki/view/705/how-to-report-a-issue-on-github

send exact information which module you are trying to install

I tried with 3.0 but so did components. When I click the upload appears to me that white page

Try to upload anything!
Demo Account Admin

User : Sorinel
Pass: sorin123

www.tunned.ro
http://tunned.ro/rdr_m/administrator

Ossn version and component version must match.
Come2play is Version 2. And most likely you are running Ossn Version 3.

I tried so!

When I upload, it no longer appears nothing!

Its make no sense to put component file in public_html/components.

Go to yourwebsite.com/administrator/com_installer to upload component after that
Go to yourwebsite.com/administrator/components to find and enable it.