The tool can be used offline, but only after successfully connecting once, because what you install is only the launcher, it still needs to download the client, server and runtime once.
I'm having the same issue, and I have xfinity as an ISP
This was a bug with newly created accounts due to a recent server upgrade. It is now fixed. My apologies.
Ah okay, do you think it’s an issue on the server end? I’ve tried making other accounts but it ends up with the same result
No, the server works for most people, it's something with some people's setup but I don't know what.
I’ll check my firewall and see if it’s getting blocked