[GMX] "Ignore events older than x days" does not work properly

[lysathor]

Problem scope

• I'm sure that this is a DAVx⁵ problem.

App version

• I'm using the latest available DAVx⁵ version.

Android version and device/firmware type

Android 15, Jan 2026

Steps to reproduce

Change "Ignore events older than x days" (in German the setting is called "Termine, die mehr als ... Tage in der Vergangenheit liegen, werden ignoriert") from 90 (default) to 900.

Actual result

Less events are visible in the calendar apps that with the 90 days setting. In my case the current month only shows 2 events from 1 calendar.

I tried different calendar apps, so I am quite sure it is an issue of davx.

Change number of days from 900 to 300 makes the events of the current month visible again (over 25 event from all my 3 calendars). I have not checked all the other months.

Expected result

Calendar should independent of "Ignore events older than x days" always show all the events of the current month, in my case over 25 event from all my 3 calendars.

Further info

I use CalDAV calendar of my GMX account, I have there 3 calendars. My calendars are not so big. Exported they are ca. 120KiB, 190 KiB, 150KiB.

Thunderbird has no issues showing all the events. There is no limit how far I can go into the past. Why is there a limit in Davx?

[rfc2822]

I tried different calendar apps, so I am quite sure it is an issue of davx.

DAVx5 asks the server for the time-filtered events. If less events are visible, it's almost certainly a server problem.

Can you please report it to the server?

Thunderbird has no issues showing all the events. There is no limit how far I can go into the past. Why is there a limit in Davx?

By default, there's a limit to make the sync process scaling. Otherwise, every request would check and request more and more events (and this over a mobile data connection).

If you don't want it, you can just set the setting to empty.

[lysathor]

Thanks for the helpful explanation.
Then I will close the discussion.