If you exclusively use Joplin at home, really doesn't matter whether or not you use HTTP or https.
I use http because that's all my NAS server supports with Joplin server and I pair that with a free peer-to-peer VPN called tailscale. End to end encryption and access to your network attached storage server from anywhere on the internet so if you are out with your phone somewhere you can still synchronize from your phone to your server even if you're not home and you don't need to open any ports on your router and the software is straightforward to set up. It only took me minutes to configure three PCS and my NAS server and my phone.
Is it normal that there are already deleted remote objects? (762)
EDIT: after some hours, I now have a lower number, is it normal?
Also, when creating the shared folder on my NAS, I left the trash active (default):
Is there any point and/or could it cause a problem?
I put a / at the end of the path, but on the Joplin doc for Nextcloud, it is indicated without: https://example.com/nextcloud/remote.php/webdav/Joplin
Does it matter?
GREAT! After reading and trying many other tips to get Joplin syncing to Synology WebDAV, your tip is the only one that worked. It was blazingly fast compared to Dropbox. I use it only in my home network.
That's it, my synchronization with the Synology WebDAV server is complete on my two Windows PCs.
So I tried to start sync on my Android device and I indicated my ddns address like https://myname.synology.me:5006/joplin/ but after several hours nothing seems to have progressed: 6/6 sync objects/total. While I actually have 149200 objects in total.
I'm connected to my local WiFi, I read that could be the problem, what do you think?
I'm going to try with my local fixed IP in http...