According to Justin Sun, USDD is functioning normally and is comparable to Wrapped ETH in terms of trading. Users can exchange USDD at a 1:1 ratio on the official website, and any deviation from this ratio may result in a loss. Centralized exchange (CEX) liquidity for USDD is expected to continue strengthening, which is beneficial for traders looking for stable exchange rates and high liquidity levels (source: Justin Sun on Twitter).