there must be a way to limit the app.
it cannot and must not be that guests can install the app, log in to the WLAN and access all the settings and make changes just like that.
A user management would be great where I can unlock devices that register on the Youvii via the server settings and select what this user is allowed to do or what this group of users is allowed to do. e.g. Heaters, lights, shutters, switches. Certain switches only, certain heaters only. I would do this via user groups and choose what the group is allowed to do.
Only for the first connection from a "new" YOUVI mobile client (for security reasons).