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I'm not confusing anything. All the confusion is in your head. Because the issue is ONLY about the deadline and how strict it is. You told me that I didn't provide a time when I could play. You did this at 1:19 AM Moscow time! I forgot to provide the time – that's true. But what prevented me from replying to you immediately after your message, if I was online? Answer: NOTHING! But you rejected that possibility IMMEDIATELY in your message. Here, you weren't extending the "deadline" in a situation where the OPPONENT DIDN'T EVEN SHOW UP!
P = Principle!