That might be their justification to ban Iranian IP's, but you can just contact them and ask them what further steps are required to get your money/crypto out of there. I can't believe that they will actually attempt to refuse giving back any of these funds to *ex* users -- otherwise it's flat out theft. You can also choose to use a proxy to visit their site, or just set up yourself a solid and safe VPN connection. To add -- exchanges always notify their users when it comes to certain important TOS changes. Bitfinex did the same when it comes to them not allowing US citizens to make use of their platform anymore.