Well, your government blocking access to evil web sites? The US security authorities being spiteful and blocking access from certain countries? Or trivial issues like your network configuration not being up to snuff or using an unsuitable browser? Who's to say? without any proper technical details nobody can even begin to guess...
Hey, I think the Adobe closed Iranian IP Addresses under the US government law, but i dont know why? Because i can access other US sites like Microsoft, Apple, Corel, Autodesk, Amazon, ebay, Yahoo and ... .
Now i cant access to my Adobe iOS applications because they need connection with Adobe Creative Cloud and i cant connect with it. I have to use my VPN Connection.