Highend WP Theme Plugins Issues

Hello, everything was working fine on my site when I first installed the theme, but then the plugins failed to update and it broke my site. If I go to the Highend Install Plugins page, the plugins are big empty boxes. If I hover over them, I see the install/activate/update buttons, but clicking them does nothing. I tried uninstalling one, but now I can’t find it to reinstall; using the Highend Install doesn’t work. I need this site to be live in a week, but there’s no way I can publish it with the issues it has.

I’ve cleared browser cache without effect.