Hi and first of all, many thanks for your work!
I'm used to use DavDroid to synchronize Owncloud Cal and AdressBook on my Android 7 Honor 8 phone.
I change Owncloud for Nextcloud and impossible to retreive datas from my Cals and AdressBook.
I can establish communication for cals (not for addressbook) .. but no datas in my agenda nor my contacts application !?
Any ideas ?