HASS Calendar Addon with Synology Calendar does not give a calendar sensor

Some how my HASS Calendar Addon configuration does not give me a calendar sensor with Synology Calendar.

The caldav-server I try to connect to is a Synology Calendar implementation. It supports synchronization with CalDAV clients such as Thunderbird, macOS, and iOS that are compatible with the CalDAV protocol. I tried both URL-strings for Thuinderbird and iOS.

The iOS integration URL-string works fine in HA Calender with de HA standard CalDAV integration and with CalDAV Synchroniser in Outlook365 .

I hope someone out here has experience with this Synology Calendar environment and how to connect to HASS Calendar Addon.

With this config in the HASS Calendar addon I do not get the sensor.tonneke in Development Tools > States

- calName: tonneke
  calType: caldav
  username: "!secret calendar_caldav_username_ton"
  password: "!secret calendar_caldav_calendar_caldav_password_ton"
  caldavUrl: http://xxx.xxx.xxx.xxx:20002/caldav.php/ton/

image

Overall HA Log does not show sensor.tonneke either.

HASS Calendar Log has no errors:

s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
cont-init: info: running /etc/cont-init.d/00-banner.sh
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 Add-on: Hass Calendar Addon
 Addon to consume caldav and google calendars and make calendar events available as sensordata in Home Assistant.
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 Add-on version: 0.300
 You are running the latest version of this add-on.
 System: Home Assistant OS 9.3  (amd64 / generic-x86-64)
 Home Assistant Core: 2022.11.2
 Home Assistant Supervisor: 2022.10.2
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 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
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cont-init: info: /etc/cont-init.d/00-banner.sh exited 0
cont-init: info: running /etc/cont-init.d/01-log-level.sh
cont-init: info: /etc/cont-init.d/01-log-level.sh exited 0
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started