Plugin admin page not working

I just switched my website from local to live, and now I can’t access my Revolution Slider admin panel. The menu is there, but when I click, I get a “The connection was reset” error.

I thought it might be the plugin that didn’t install properly, maybe to read/write access, so I tried setting my whole httpdocs folder temporarily to 777, but still no success.

The rest of the admin panel works properly and wordpress can write to my database.

Any help or advice would be greatly appreciated.