Do these references to “services” and “service” mean that your installation was as a Windows service?
You would have had to have run Duplicati.WindowsService.exe to have that. The GUI installer can’t do it.
Running as a service complicates password removal because if you just run Duplicati.GUI.TrayIcon.exe with --webservice-password= this will remove the password from the ordinary-user not service install, however you should have also noticed that you have no backup jobs, if all your jobs are in service install, unless you’ve just taken a break for a few months. Password removal from a service can be done using:
It is possible to pass arguments to
Duplicati.Server.exe, simply add them to the commandline:
Duplicati.WindowsService.exe install --webservice-interface=loopback --log-retention=3M
per the manual, however in your case you could add the --webservice-password= to whatever you put after the install command. An even easier way is to edit the service using services.msc, or however you like to edit services (for example in Control Panel). Service arguments should appear in Properties.