Unable to download and install Rocket.Chat

Hi I tried to install rocket.chat on ubuntu 18.04 I came to a part of the installation that needs to download rocket.chat and the download servers are not working
https://releases.rocket.chat/latest/download
Error Message
Service Unavailable

What to do?
I refuse to install from Snaps
And I don’t even know if it will work at all from Snaps that downloads don’t work.