Game ended in a draw which I didn't agree to

Game 2459895 just ended in a draw and I never agreed to this. I was likely going to win the game and had been waiting days for my opponent to take their turn. I am not sure if they hacked/cheated or if it was a bug I've never seen before. I have been playing this game for 20 years here. I've never found a way to contact the admin. How can I report this?

I found a way to contact the admin.