Android - iOS app Media Sync not syncing

I installed Filecloud on my home server running windows server 2011. Everything works good. Installed a custom domain with custom ports.
installed all latest ios app on my iphone and also Android app on my LG G8.
When I try to do a Automatic Media Sync, on both devices, it doesnt upload and gives errors.

After 2 days of fidling around with the whole thing, I tried creating 2 folders on the server in [MY FILES], with the Device names of my phones. As soon as I did that, the devices started syncing automatically.

So I solved the issue…kinda.
I wonder if someone else had any issues like that, and can the developpers just check why this has happened to me.

@Robin

Please check whether you have enabled the Endpoint Backup and were using the correct backup path. You can refer to the URL below for more details on this.

https://www.getfilecloud.com/supportdocs/display/cloud/Endpoint+Backup+Settings