Just wanted to inform you that after you press PLAY on the My.com Launcer, gameplay hours are not being tracked. The only time steam counts hours played is when the my.com launcher is open after it collapses and the game window is launched hours tracked don't show.
There are other games on steam that use launchers that have to launch their games, they usually have to put an option under their launchers to minimize to tab to keep players game hours tracked.