Restrospect ignores specified user

[kidziti]

I activated the administrator account in my Windows 10 machine, gave it a password, and specified it to Retrospect under Preferences as the specified user (Log on to was set to the name of the computer.) It does not warn me that the local user is being used instead, but looking at the window title bar it is clear that Retrospect is simply ignoring the specified user with administrative rights. There is nothing in the logs that tell me anything, either. What could I be missing? It seems so simple to set up and yet it won't work - and it won't send me an error or tell me why.