KuCoin did not publicly disclose the specific sanctions measures behind its decision to exit Russia and Belarus, the number of affected user accounts, or the total trading volume involved in its exit

From the articleKuCoin Pulls All Products From Users in Russia and Belarus, Effective Immediately - UnchainedAlso in KuCoin ends Russia and Belarus services as exchanges retreat under sanctions - Cryptopolitan, KuCoin exits Russia and Belarus as global crypto exchanges pull out under sanctions