UrBackup - New Electric Eel Docker App - Socket has error: 111

Having been looking for a nice windows backup solution I was thrilled to see Urbackup come to TN as a catalog app.
However, I have been unable to get the server to connect to clients. When it attempts such, I get the error: “Socket has error: 111”
I set it up, user and group 568, and made the datasets owned by 568/568, I also tried with root. I configured a static ip in network settings 10.1.0.10 and set the networking mode to host. My client and server are on the same vlan on my router, and my client recognises the server, the server sees the client and reports that its online but backups fail and logs report the error I mentioned.
I’m not sure what to try from here.