It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

According to one of the reviews there is a save bug, among other bugs.

Anyone knows if at least the first bug has been fixed, if it is even real of course.

(1) Save game modifications. Loading save games is not an option -- soil conditions are altered all over the map with loading, and rocks appear out of thin air and break roads or buildings.
(2) Military stuck. Military units are regularly stuck and of no use. Other units as well.
(3) Notification issues. Quests are not displayed, but you are punished for not fulfilling them.
(4) Raids in vain: Once you have run out of blueprints, you may still get a nonce blueprint (i.e., no content).
(5) Unit display problems: Units tend to appear or disappear out of thin air and in parts only.