[SOLVED] Can't add remote ultra.cc rutorrent client to local sonarr instance

Sonarr version (exact version): v4.0.12.2823
Mono version (if Sonarr is not running on Windows): ???
OS: ubuntu 22.04
Debug logs:0bin - encrypted pastebin

Description of issue:
I tried adding the url/port/protocol/creds (from ultra.cc rtorrent client screenshot below) to the sonarr docker container running locally in my arr stack and it complains that the it cant connect (sonarr client config screenshot below)
I have confirmed that the same rtorrent instance is web accessible from the docker host.
Please see link above for logs

ok after re-reading the ultra.cc docs, turns out I had the wrong port!