Venezuela here too, the problem seems to be only affecting those who use CANTV as their ISP. It's a nationwide block due to the political crisis atm. Users who use other ISPs are not receiving this issue, I don't think Square Enix can do anything about that. The only way to fix this is to connect to the game using a VPN or a proxy server.

Venezuela aqui tambien, parece ser que el mamaguevo de Maduro ha bloqueado la pagina HTTPS de FFXIV, y por eso no podemos entrar, los que tengang CANTV van a tener que conseguirse un VPN or algo para jugar. Que cagada de pais vale.