I would check your single click entry setting to see if it is set for what you want.
Single click entry: It's a blitz game, you are completely winning, but your time is running out. Use the single-click entry to avoid this situation.
Normal: If you click a square to which only one piece can move it is immediately moved there. If more than one piece can move to the square then you must click it for the move to be executed. If you click g1 or g8 and short castling is legal it will be automatically executed.
Aggressive: Same as normal, but if more than one piece can move to the clicked square the piece that last moved will automatically be chosen. This allows you to execute a long check sequence or a king march very rapidly. A second difference: if you click a piece that can make a number of moves, if one of these captures the piece the opponent has just moved, then the capture is automatically executed.
Note: You can use a special technique called "dropping". This entails picking up a piece while your opponent is still thinking and holding it over the destination square. As soon as the opponent's move comes you let go of your piece, using practically no time on your clock. It is a slightly dangerous technique – if the opponent plays something unexpected you may let go the piece and then face disaster. Still dropping is used extensively in fast games on the chess server.
It's simple. I click on "new game" tab. It shows a board.
I left-click on a piece to move and it already moves to a preset square. I have to hold the mouse button and drag it each and every time. Is there a way out of it?
Thanks.