Amazon AWS EC2 Expert needed

My site was up on the server, i needed the instance scaling back to a smaller instance. That has been done, however i cannot reach the developer nor the freelancer who was doing the job so i urgently need someone to take a look on the server and get my website back up. Apparently the snapshot was taken so the back up is there. It just needs loading. The server is also connected to MongDb i need to make sure all the settings are still correct and unchanged once the site is up. Can anyone help?