I have a cloud ( nextCloud 14.0.4 on a shared hosting at OVH) that runs well.
On my computer ( on Ubuntu ) Thunderbird & Lightnings are well synked with it (addressbooks, calendars, tasks…)
On my mobile ( a Fairphone on android 7 or 8 ) i have put DAVx5 instaled (the last version at this day DAV x5 2.2.1-ose) to sync tasks, calendars and addressbooks. It is a new phone and the calendars and addressbooks are empty.
Now, the lists of calendars and addressbooks are known by the phone : they appear in DAVx5 and in the apps. Previously, the time to sync was pretty long (some calendars are heavy and there are a numerous addresses in the addressboks). Now nothing seems happening. The synking seems getting no content and the apps are empty. And when creating e.g. a task in OpenTask, the task seems recorded on the mobile but nothing seems sent to the server : I can’t find it neither on the web interface nor in Thunderbird.
Some ideas ? Thanks