It seems I can't installed any WPMU plugin from WPMUDEP

It seems I can't installed any WPMU plugin from WPMUDEP dashboard. When i click, it says "Install" it says "install package is not available"

I would like to know what is going on. I can install My other website, so the problem is somehow within the setting of this site.

By the way, I have been using iTheme security plugin and change "wp-content" to "lc-website" Yet, I can install reqular plugins from depository or a basic upload process.

I hope I can solve this soon.