as i understand games in which player not sent turn for 2 weeks supposed to be finished and yes some of my games were finished when this feature was implemented but now i have at least three more games unanswered by opponents for 2 weeks but they are not finished.why? is this auto-end automatic OR it should be manually forced?

Same problem here, it seems like it should be manually fixed 'cos the 14-days limit does not work automatically. Hope the 2 weeks limit keeps on, since it's a great improvement.

yes,
we have finished such games manualy.
at this time we are implementing feature which will allow for players to set turn limit. Automatic game finishing will be started just after that.