Problem with dashcast

Hello, i am a newbie here.
I followed the instructions on the net for casting a dashboard to a google hub.
When i run the script i get the login screen on my hub.
I do use the line ```
allow_bypass_login: true

Now i have read that you only can use this when you have only one user.
I have multiple but i cannot delete them because they have been created by a user of a previous instance of HomeAssistant..
Every time i install HomeAssistant new from scratch i get all the users i have ever created back.
Can somebody please help me?