How move window to left/right workspace

Use gsettings, not dconf, see this. e.g.

gsettings set org.gnome.desktop.wm.keybindings move-to-workspace-right "['<Shift><Ctrl><Alt>Right']"

etc

I had the same issue. Found the settings for this using dconf-editor, under

• org/gnome/desktop/wm/keybindings/move-to-workspace-left and
• org/gnome/desktop/wm/keybindings/move-to-workspace-right.

The default keybindings are ctrl+alt+shift+left and ctrl+alt+shift+right but you can change them to whatever you like.