I think I’ve found the issue, it looks identical to the issue reported here.
DAVx5 not syncing with Synology NAS WebDAV
I have an older Synology NAS that does not support the Collaboration suite. I have setup a calendar and set the CalDAV flag. I cannot access this calendar using DAVx5, but it works with Lightning in Thunderbird. The contacts in the NAS work on both the phone and Thunderbird.
I have attached the debug log.
Thanks in advance.davx5-info.txt
The logs say, that “bfwcserver” couldn’t be resolved in your network. Maybe you have a typo or so? Try if it works by using the IP address directly (just for testing). You should of course go with the name instead of the IP address later.
@devvv4ever Thanks for noticing that. I will retry.