Deluge config issues - docker synology nas

hi, existing transmission user, but looking to try out deluge

using synology NAS docker.
i’ve got the container setup, and i can access the webui, but i seem to have a problem with any torrent starting and downloading.
the setting in preferences > downloads > downloadto seems like it might be the issue.

i have mounted /downloads to /data/downloads/torrents.
bu that preferences setting seems to be set to /root/Downloads, and no matter what i change it to the torrent either starts with an “error” or starts but never actually starts the downloads (stays at 0%).

my docker container settings are

{
   "cap_add" : [],
   "cap_drop" : [],
   "cmd" : "",
   "cpu_priority" : 50,
   "devices" : null,
   "enable_publish_all_ports" : false,
   "enable_restart_policy" : true,
   "enabled" : false,
   "entrypoint_default" : "/init",
   "env_variables" : [
      {
         "key" : "PATH",
         "value" : "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
      },
      {
         "key" : "HOME",
         "value" : "/root"
      },
      {
         "key" : "LANGUAGE",
         "value" : "en_US.UTF-8"
      },
      {
         "key" : "LANG",
         "value" : "en_US.UTF-8"
      },
      {
         "key" : "TERM",
         "value" : "xterm"
      },
      {
         "key" : "PYTHON_EGG_CACHE",
         "value" : "/config/plugins/.python-eggs"
      },
      {
         "key" : "GROUP_ID",
         "value" : "101"
      },
      {
         "key" : "USER_ID",
         "value" : "1026"
      },
      {
         "key" : "PUID",
         "value" : "1026"
      },
      {
         "key" : "PGID",
         "value" : "101"
      },
      {
         "key" : "TZ",
         "value" : "Europe/London"
      }
   ],
   "exporting" : false,
   "id" : "e7653265742af2467135bd5456f3d38875393f2b2f981d4fead8a83f21e0f0c8",
   "image" : "linuxserver/deluge:latest",
   "is_ddsm" : false,
   "is_package" : false,
   "links" : [],
   "memory_limit" : 0,
   "name" : "deluge",
   "network" : [
      {
         "driver" : "bridge",
         "name" : "bridge"
      }
   ],
   "network_mode" : "bridge",
   "port_bindings" : [
      {
         "container_port" : 58846,
         "host_port" : 58846,
         "type" : "tcp"
      },
      {
         "container_port" : 58946,
         "host_port" : 58946,
         "type" : "tcp"
      },
      {
         "container_port" : 58946,
         "host_port" : 58946,
         "type" : "udp"
      },
      {
         "container_port" : 8112,
         "host_port" : 8112,
         "type" : "tcp"
      }
   ],
   "privileged" : false,
   "shortcut" : {
      "enable_shortcut" : false
   },
   "use_host_network" : false,
   "volume_bindings" : [
      {
         "host_volume_file" : "/data/downloads/torrents",
         "mount_point" : "/downloads",
         "type" : "rw"
      },
      {
         "host_volume_file" : "/docker/deluge",
         "mount_point" : "/config",
         "type" : "rw"
      }
   ]
}

am i missing something obvious?

my mistake.
i should have set the preferences to /downloads