Download Station is Transmission just with Synology web ui over it. If you need a hand with running qbittorrent or deluge inside a container, please start a new topic describing what image you have used and what exact steps did you do, or PM me and I will help you in private with it.A horrible option I have written off many times before. I've also tried Transmission.
This sounds like the problem I had (and still have) Sonarr couldn't move the files. I played with "rights" and PUID/GUID all day and nothing was accomplished. My half-baked solution was to create a folder...There was no error at all. the files just remained where they were.