The new rules, published on its official website, provide restrictions on the provision of services to citizens and residents of countries in respect of which the United States has imposed an embargo.
If you go to the official website and go to the "support" section, you will notice an innovation in the "2.2" section, which will come into force on March 9, 2018. Here's what the exchange executives said:"You may not use the services of the exchange if you live, are a citizen or resident of any state, country, territory or jurisdiction that is embargoed by the United States, or where our services are considered illegal or contrary to the law."
Full information can be found here:
It is possible that users residing in the territory of the Russian Federation can forget about trading on this exchange. However, in such a situation are the citizens of other countries.
Even if formally everything is in order, the representatives of Bittrex have the right to decide on a territorial ban on the provision of services at their own discretion.
Recall that in August last year, the clients of the crypto exchange Poloniex were in a similar situation. Then it became known that the exchange suspended the withdrawal of funds for countries subject to U.S. sanctions.
Another FUD if mainstream media write story about it.