Clock running on opponent, but I loose the game (abandont by I eventually)
This happens because of your internet connection. If you are playing a game and it is your opponent's move and your internet goes out, your opponents time will look like it runs out, but Chess.com cannot register that you opponent has made a move until your internet gets back. When it does get back, most likely your opponent made a move, and since you disconnected, the game got abandoned.