recently,
OKCoin presently does not serve customers in the following countries/regions/territories: Hong Kong, Cuba, Iran, North Korea, Crimea, Sudan, Malaysia, Syria, USA [including all USA territories like Puerto Rico, American Samoa, Guam, Northern Mariana Island, and the US Virgin Islands (St. Croix, St. John and St. Thomas)], Bangladesh, Bolivia, Ecuador, and Kyrgyzstan. For more details, please read our Terms of Service and Risks and Compliance Disclosures.

If you do have an account there with some fund i suggest U contact their customer service chat to resolve your issues and transfer out your fund elsewhere. That should not be a problem but the process may be a bit lengthy.