In most cases, it takes less than 30 seconds for the trade to synchronize, but sometimes the Steam servers, which are out of our control, are either out of order or simply slow because of heavy traffic, and therefore it may take longer ⌚
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If a tradeoffer has not synchronized within 1 minute, please be patient, and refrain from creating multiple tradeoffers. The tradeoffer will synchronize if the Steam servers are working, and if the Steam servers are out of order, no trades will synchronize no matter how much you try 🚩