site is messed up. we have major issue with our website going down all the time

I was working with your team support by the name Bamboo and he was trying to fix the issue. site was showing with extension wpmudev.host and he was trying to correct it. asked for cloudflare login info which i provided to him. Site is all messed up please check all and fix issues.
live site: http://www.berkshirefurniture.com
host site: http://www.berkshirefurniture.wpmudev.host

thanks
Saber