Impossible to add and save contacts in client Spark 2.6.3

Hi,

I've just install openfire 3.8.2, with my-sql database and connected with an AD, clients have spark 2.6.3.

When I add a new contact, resolve name is ok, but impossible to save this contact, and his status stay grayed.

If I leave client Spark and reconnect, I loose my contacts. Why ?