Looks fine to me but you have no log file so there's no way to tell:
rclone rcd --rc-web-gui-no-open-browser --rc-addr=:5572 --rc-user=user --rc-pass=pass --rc-web-gui-update -vvv
2021/07/20 08:17:04 DEBUG : Using config file from "/Users/etexter/.config/rclone/rclone.conf"
2021/07/20 08:17:04 DEBUG : rclone: Version "v1.55.1" starting with parameters ["rclone" "rcd" "--rc-web-gui-no-open-browser" "--rc-addr=:5572" "--rc-user=user" "--rc-pass=pass" "--rc-web-gui-update" "-vvv"]
2021/07/20 08:17:04 INFO : Using --user user --pass XXXX as authenticated user
2021/07/20 08:17:04 NOTICE: Serving remote control on http://[::]:5572/
Hey old friend, thanks for replying. You helped be greatly last time. This the output:
2021/07/20 13:17:42 DEBUG : rclone: Version "v1.55.1" starting with parameters ["rclone" "rcd" "--rc-web-gui-no-open-browser" "--rc-addr=:5572" "--rc-user=daniel" "--rc-pass=pass" "--rc-web-gui-update" "-vvv"]
2021/07/20 13:17:42 INFO : Using --user daniel --pass XXXX as authenticated user
2021/07/20 13:17:42 NOTICE: Serving remote control on http://[::]:5572/
strange thing is, I can login, but then it only shows a blank page "Not found". Upon purposefully entering wrong credentials the terminal displays an error. So it seems to be running but not properly somehow.
BTW what kind of login page should I see? It get the generic login box provided by the browser, but not the screen from the demo page or the hosted version of the web gui