UID/DisplayName problem Ownclud 10.1

[thecourse]

Good morning,
Sorry for my English.

I'm trying to connect a zimbra installation to a new owncloud 10.1 installation with zimbradrive, where everything works but I clash with the Display Name: the first access has the correct display name the second the UID of zimbra, the third the display noame etc etc .

Moreover 5 minutes after login, even if the correct display name is present, it is replaced by the UID.

Versions:
Owncloud: 10.1
Zimbradrive 0.8.23
Zimbra: Zimbra 8.8.12

Thanks in advance