Active Game deleted ??

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ACWolfpack

I was in the process of playing an 1800 player in online chess . My opponent offered a draw (declined) and then went on a 1 month vacation. The game was accessable until this morning.However today there is no sign of it anywhere on the system.

Unfortunately I can't remember my opponents name but I have the position commited to memory.  How could this happen and can I retrieve the game?