extra keys not allowed @ data['delay_on'] when adding new sensor

[biopixen]

Checklist

• I am using the latest version of Alarmo (latest version can be found here)
• I checked for similar existing requests (both open and closed) before posting.

Alarmo Version

v1.10.16

HA Version

2026.4.2

Bug description

Sensor/add sensor
Tick a Aqara Magnet Sensor zigbee2mqtt and "add to alarm"
Error
Something went wrong!
Message format incorrect: extra keys not allowed @ data['delay_on']

Response error: 400

Please report the bug.

Tried: Cleaned out alarmo, removed all automations and helpers. rebooted, added alarmo, same issue
i have also removed blueprints that was connected to the alarmo addon

Steps to reproduce

Sensor/add sensor
Tick a xxxx zigbee2mqtt door sensor and "add to alarm"

Relevant log output

Log details (ERROR)
Logger: homeassistant.components.http.data_validator
Source: components/http/data_validator.py:69
integration: HTTP (documentation, issues)
First occurred: 20:27:29 (3 occurrences)
Last logged: 20:32:12

Data does not match schema: extra keys not allowed @ data['delay_on']

[nico97118]

Hi @biopixen

I have the same sensor - added through z2m - working in my setup and didn't had any issue with those 🤔

I've removed one sensor and added it back and wasn't able to reproduce the issue.
I'm afraid I don't have enough details here to help further.