articulate 360 after click sign in it show couldn't open port

Hello Nattasak!

Thank you for sharing a screenshot! 

These domains must be accessible on port 443 for Articulate 360 apps and services to work properly. Can you confirm with your IT Team that those domains are accessible?

If they are and you still see this message, I'd recommend connecting with a support engineer to look into what else needs to be configured.