(adsbygoogle = window.adsbygoogle || []).push({}); I don't see package manager anymore , any idea why

Multiman has a built in package installer.
Simply boot up mM and navigate to the far left column, you'll see it there.
Alternatively, you can go into mM and go to the far right column, where you will find "Install Package Files 2.0" which you can install and have on your XMB in replace of the Package Manager.