Backup of Calendar-not working.

[DaLiV]

⚠️ Before posting ⚠️

• This is a bug, not a question or an enhancement.
• I've searched for similar issues and didn't find a duplicate.
• I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

settings

• contacts and calendar backup
• all in position "ON"
• backup now (also as automatic daily)
• wait
• contacts are backed up
• calendar are not

Expected behaviour

backup of calendar completed

Actual behaviour

backup of calendar occurs not

Android version

13

Device brand and model

realme / redmi

Stock or custom OS?

Stock

Nextcloud android app version

20251223

Nextcloud server version

32.0.3

Using a reverse proxy?

No

Android logs

No response

Server error logs

Additional information

that is more than single version ... last occurred in September (what version was installed at moment - hard to tell)

• build in use "devel" from f-droid
• all permissions on device granted

[DaLiV]

log from android
logs.txt

AdvancedSslSocketFactory ???

• server on non-standart port
• certificate is "self signed"

changed "temporary" cert to "letsencrypt" - same result - only contacts are pushed.