OKX will conduct system maintenance on Nitro Spreads on October 27, 2026. Dear OKX users: To further improve system performance and provide you with a better trading experience, OKX will conduct system maintenance on Nitro Spreads from 10:30 to 11:00 (UTC+8) on October 27, 2026. Impact of maintenance: Nitro Spreads will enter a cancel-only mode, during which new spread orders cannot be submitted. Existing unfilled spread orders can still be cancelled normally. After maintenance, related services will automatically resume. The actual maintenance time may be earlier or later; if it is completed earlier, no further notice will be given. To avoid affecting your trading, we recommend that you properly manage your unfilled orders and positions in advance. We sincerely apologize for any inconvenience this may cause and thank you for your understanding and support. OKX October 26, 2026