Sorry, this statement for citizens outside of the U.S. is buried in the middle of the original post so some people did not see it:

"Optery is only for U.S. residents at this time"

If you go to the Optery sign up page, after you select your country, we again warn non-U.S. residents of this before they submit their information.

The only benefit to signing up for Optery if you are from a non-U.S. country is we will notify you when we begin supporting your country.