To remove a device from the app, go to Settings > Device Settings and use the delete option located at the bottom of the menu.
If the Device Owner Deletes It
The device is completely removed from the database and server. It automatically disappears from the screens of all guest users. To use it again, the device must be set up from scratch.
If a Guest User Deletes It
The device is removed only from that user's list. The main device continues operating normally and remains visible to the device owner.
If you accidentally removed a device, you will need to set it up again or request a new invitation from the device owner.