Ultimater:
I have only about 1 or 2 ideas to help fix the problem- the first being that you should check your internet and wi-fi, fix those if needed and restart the browser. Secondly, you might just have a low connection with who you are playing with- in which case you might just want to wait for a bit or, again, close the window and retsart another one.
Hope this helps!
Signed: ~Samurai-San
Did you reload the page or play through the moves?
My internet connection is excellent, didn't reload the page thou cos last time i did so the game showed that i left.
Last move i did see during gameplay was opponents move of a rook straight to my bishops feeding range. My last move was then to eat the rook. But when i was re scrolling the game it showed that i did move my bishop and opponent ate it 
My conclusion is now that somekinda weird bug came up.
Thanks anyways guys for your time and help 
Hi guys!
I was playing chess here in chess.com and this time I was doing simultaneously gimp graphics. Somehow when I returned to browser I couldnt move anything. My time was decreasing and I saw my latest move, but somehow it was my move.
What the?!
I was winning with quite a lead and then this.
Sarcastic or what?
Does anyone have any idea why this happened?