I have checked the similar post and the problem they are facing are similar, but what is the solution?
1.Does it mean countries that are not supported were not ment to use the product or how are they supposed to subscribe.
2.If there is no any other way then that is very unfortunate for us unsupported countries and regions.
You can use FormsCentral from anywhere but you need to have a creadit card from one of the supported countries to be able to subcribe to a paid account.
Sorry for the inconveniences.