Hi,
I am system admin/Tech Support Engineer and handling such issues on servers while troubleshooting / monitoring servers.
The 400 Bad Request error is an HTTP status code that means that the request you sent to the website server, often something simple like a request to load a web page, was somehow incorrect or corrupted and the server couldn't understand it.
The 400 Bad Request error is often caused by entering or pasting the wrong URL in the address window but there are some other relatively common causes as well
Please get i touch via Live chat to discuss / replicate error at my end so i can work on it for you..