@norwaytoss while my tests are by no means absolute or exact. Testing from a Mac and a home/business Internet connection would not remove the possibility of the IP being disallow or otherwise not allowed.
To confirm this, if you have a cellphone provider other than at&t, connect your MacBook to your phone's hotspot, and still can't use aria, then that would be another instance of my theory not working. Or if you use you Mac book with another(other than opera vpn) VPN provider to a supported region.
At this point, we really just need someone at opera to take a look at this. They will have the insight needed to really pinpoint the issue.