myninjakiwi i think i know what happened, if you log out using the red X on the corner of the screen it wont save, you have to click logout and then quit the screen. it happened to me too...
its from 2dplay.com, on the game it has the 'play more games' link and it gets you to that site. as far as im concerned this is the original tanks, not stolen from anything
 "Platform Racing 2"){kind=icon}
 "Red Remover"){kind=icon}
 "The Last Stand"){kind=icon}
 "tanks"){kind=icon}