unable to move with left and right click

Hello, recently i bought Scorpion KM400 gaming keyboard and mouse, and in the first 5 minutes of playing I noticed that I am unable to move with left+right click and use mouse button 6 and mouse button 5 in the same time. The problem is when I hold and move with left+right click and press i.e (mouse button 5 is divine protection) my character stop moving and nothing happens,until I release the keys(then it start walking again).Is there anyone who encountered the same or the similar problem?