Yes, they have updated their wallets, you can trade 

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Fork VOTING_PRECOMPILED_UPGRADE has been activated in block #1,688,780.
Old wallets stopped working at block height 1,690,059 after this transaction
https://semux.info/explorer/transaction/0xed3824b692775eeb1de7d9c2ccad8a88e94a7ab768a46d12553e8be600e51412
Download latest version of Semux core:
https://github.com/semuxproject/semux-core/releases/latest