Hello,
the ssh key are very long so the name of the key and the delete button are not visible.
To solve this problem I suggest to keep visible only first 10 chars and last 20 chars.
See the second line in screen shot below:
My Home assistant
Add-on version: 22.0.3
You are running the latest version of this add-on.
System: Home Assistant OS 16.3 (aarch64 / raspberrypi3-64)
Home Assistant Core: 2025.11.3
Home Assistant Supervisor: 2025.11.5