I tried to write with .php and everything now works. Thanks a lot.
Synology yesterday issued a completely new Calendar beta package. Unfortunately, the Synology website is not written about it yet.
Is this possible?
Using owncloud server, local network, I’ve imported my cert into android, no luck. Still getting “Cannot verify hostname”
Of course. If you want to use an IP address as host name, make sure the certificate is issued for that (you may use a Subject Alternate Name). Otherwise, the certificate can’t be verified and will be rejected, of course: When you tell DAVdroid to connect to https://10.0.0.30 and the server identifies as “myhostname” instead of “10.0.0.30”, it could be a man-in-the-middle.