Neverends

dlna/upnp mode has limited external subtitles support by design, not the design of nova player, but the upnp/dlna protocol. Use smb if you want to use external subs.

If you change installation to image mode, then ssh can start fine, in directory mode ssh always fails, no clue.

I second to this comment. It is very helpful to have more than one parent upstream nodes under many circumstances. Pls add this feature, which would greatly improve mindmap.