Just to organize this a little bit. So far reports come from following regions:

Iraqi, Iranian, Syrian, Ukrainian, Crimean (Russian/Ukrainian users located in Crimea), Cuba, Turkey

The question:

Does anyone from above countries had their issue resolved, or have unaffected/active bittrex account?

I'm trying to determine if this issue is strictly geographic. If there exist someone (or preferably group) of people from above regions, who still able to operate than probably what's happening is not related to geopolitics/regulations. If, however, all users in some regions are affected it would indicate regulatory-like attitude. Not trying to prove anything just assessing information.

Edit:
Someone from Turkey have valid account.