Due to high network fees, USDC withdrawals on the Polygon network have temporarily been suspended beginning 5:30 AM PST on January 4th, 2022. Withdrawals of USDC on the Polygon network are planned to resume within 48 hours.
Thank you for your continued support and we assure you of our best services at all times.
Regards,
Okcoin
January 4th, 2022