To use the SXTsq 5 ac you need to get the international version and configure it according to our instructions.
Here is the link to buy the SXTsq. Make sure to specify international.
With all these gateways we get lots of questions about security. As always, https (used by most web sites) is a secure way to transmit information across wifi. We recommend using VPN services for end-to-end encryption for total security.