Thanks for the update and great that you found the problem!
DAVDroid Calendars not proposed in "S Planner" Samsung Application
I add a new account with DavDroid, and synchronization was OK but this account is not proposed by Calendar application (Ex. : “S Planner” or aCalendar).
Thanks a lot for your help
Did you enable it in the calendars app settings?
I want but DAVdroid calendar don’t be present in the list
we own 2 Samsung devices, too (S6 + Note 10.1). There was never a problem with showing in SPlanner… What device do you have? Maybe some privacy setting? Can you restart the device? Maybe it is some temporary problem…
I try with 2 devices : Samsung Note II and Samsung Galaxy Trend Lite, with the same result.
My CALDav server is RADICALE on a Rapsberry with a test calendar without credential.
When I connect DAVDroid I give the account and mail that I want.
Did you check the calendars in DAVdroid? How many calendars did you check?