Lighter is experiencing withdrawal delays as the Arbitrum network faces high congestion. On December 30, the Lighter team confirmed the issue on Discord, advising users to switch to Ethereum Layer 1 withdrawals, which may take up to four hours. The team recommends waiting for reduced network congestion to facilitate smoother transactions. Earlier reports indicated that prover block submissions were stalled, with the last block processed around 5 PM UTC+8, contributing to the temporary withdrawal delays. Users are encouraged to monitor the situation and adjust their withdrawal strategies accordingly.