Yes - 18.104.22.168 canary is likely more stable than the 22.214.171.124 - 126.96.36.199 canaries, so that’s a good place to be.
I’m a little confused what - if the backups are working, why did you start a database Recreate?
You won’t see an rclone process in Task Manager as Duplicati doesn’t actually run rclone, it just uses the same API calls that rclone does.
Most likely clicking stop would work if you let it sit long enough. Duplicati is probably running a very slow step so won’t notice the stop request until it’s done with it’s current step. As you found, killing a database Recreate means starting over from the beginning.
While database recreates have been known to be very slow for some people (we still aren’t sure why) it could also be that you’re having issues with your destination (OD4B).
When the Recreate is running, if you go to the job “Show log” page and click the “Remote” tab do you see any
get commands, just a mostly blank page, or a “database is locked” message?
You could also try looking at the main menu “About” -> “Show log” page then clicking on the “Live” tab and selecting “Profiling” to watch if any commands are running even though the database isn’t getting any larger.