No device display in the 2D and 3D view

[Enterprise4400]

Hello,
I installed the latest ESPresens as a Docker on Ubuntu 23.10.
I also flashed two ESP32s with firmware v3.3.5.
For testing purposes, I only gave them the names Kitchen and Foyer.
In the config.yaml, I only entered the IP address of the MQTT server with the credentials.
For my iPhone, I found out my irk number via Enroll.
I entered this in the config.yaml under Devices.
Then I entered an itag: Beacon in the config.
After restarting ESPresense and clearing the cache, the x, y, z coordinates were displayed under Devices.
I took the floor plan from the config.yaml.
Because everything has to work there until I create my own plan.
When you click on the device, you get to the 2D view.

Now here's my question:
The devices are not shown in the 2D view or in the 3D view.
Where else could my mistake be?