ASP.NET mvc Ninject problem, panic fix needed.

Please see the following link <[login to view URL]> The code has not been edited for several months, but suddenly the web is down. The VPS is extremely slow. The sites cycle between working fully - working slowly - error message - no connection at all. I need troubleshooting and fix for someone who can assign all time for this until it's solved. You will recieve Remote desktop credentials after bid approval.