Oh sorry to hear that happened, can u tell me your monitor resolutions and proportions?
That would help me a lot with fixing that!
When it comes to controls:
WSAD - Moving
QE - Rotating
SPACE - Running
VC - Look Down/Up
R - Rotate 180 degree
1-4 Change mouse modes that will allow you for a different type of interaction
To attack use fight mode and swipe the mouse on the screen in the chosen direction
Hope I was able to help you, once again sorry for the problem.