@OP: You may have the "touch-move" setting activated. Under that setting, if you make a move in Online Chess, it is automatically submitted.
If you prefer to have a Submit Move button, you should be able to make the change by doing the following:
1) Hover over HOME and click Account.
2) Click Online Chess Settings.
3) Scroll down to Move Preferences. You should see the subheading "Confirmation," and two options:
a) I will click the SUBMIT button to confirm my move.
b) No need for a SUBMIT button - I play touch move!
If (b) is selected, switch it to (a). I hope that will rectify the issue!
I know its not 'proper' but I like to have the submit button turned on when I'm playing online chess so I can see what the board would look like if I’d made the move.
The downside is that if I’m playing live chess, I think I’m testing a move out and blam! Its done. oh. I hope it works. Just saying really. I’ll work on my imagination. I guess that'll help with the game :)