1) I don't understand you. What you see are OUTGOING payments from the address, not incoming. Yes, we use randomly various old round addresses for payouts in newer rounds - that is how it works. We never join the game by ourselves. Just double-check whether there is some INCOMING payment from some old round address. There is no such payment.
Sorry, wrong explanation - that is not the case. What are you looking at (1NTNkfw7rULp4HujMEmpuTkwGFkdnhYz8v) is not our game address at all, but the address of some of our players! You can see there many INCOMING payouts from various rounds... what's the problem??