Hallo! Unless I have done smething wrong, there seem to be something not working as it should be! The installation of Joomla plugin was without error. The database rebuild works very fine. A new user in the aMember database, which was not in the Joomla database, gets created during the rebuild process. Hence, there exists a User with the same name and all information in bioth the tables, aMember and Joomla. When this user is logged in the aMember and changes the First name and Last in his profile, this information is not getting updated in Joomla. Why? Here, also the rebuild again does not work as the user does exist in both.