We suggested it on the Yunohost site and they started it. The other person I'm working with I think made some progress but we're new and don't really have the time to try and figure a bunch of stuff out.
I think there's a file you have to delete and there's some stuff in the cytube config the Yunohost installer hasn't been setup to edit properly yet.
https://github.com/calzoneman/sync/issues/996
To get the Yunohost installer to work you have to either use a specific version of node or delete the package-lock.json file. Some of the stuff in the Cytube config wasn't setup by yunohost yet and there was a permissions issue with the certs. I was also going to try it again when I have more time in a few days.
edit:
I've gotten it to work twice with Yunohost now and I think I know what's missing:
Port 8443 needs to be opened in the firewall
In the cytube config: the port in the http section needs to be changed, the https block needs to be uncommented, the root domain name needs to be changed off of localhost, under io socket the domain needs to be changed to https, and the cert paths need to be added under the https socket block (etc/yunohost/certs).
The last thing is the node app/cytube needs access to the certs. It gives an access error without it and I don't know how to do this properly. My friend asked in the yunohost element and I guess this a weird/bad thing, but there is a fix.