I miss the old TCG client

I was just in a battle on TCG Live Ranked ladder. I was doing really well and had a good chance of winning, and then the game told me I conceded. I had time left on the timer. I never even touched the settings option (I was browsing my hand). I'm just trying to practice my deck for a league challenge tomorrow, and now I can't even do that without random B.S. happening. Despite the problems that TCGO had, my experience was so much better on there.