They are very focused on development and therefore the documentation is a bit sparse (maybe).
The truth is that it is not very complicated to install. It is simply to download the binary (it is statically compiled so it has no dependencies) place it in /usr/bin
and execute it (the best is to create a user in the machine with the home in /var/lib/conduit
and then launch it with systemd).
Another option is to simply launch it with docker.
In any case, if you have problems, comment it here and we will look to see what could be happening.
Yes, without a doubt, for me it is the most balanced client, a pity that there is not for Android, but well, in mobile Element does not give problems either.