Yes I did, at least the tables with content in it. I solved the problem with creating new lists and subscribe the users to it. Now all user get shown in frontend too. But there is a new problem: I want to show the custom fields in frontend edition too. But when I make the display setting in the costum field configuration I get a saving error. Exceped with one costum field where I could make these setting. But when I create a new custom field I can make the settings an the field get shown in frontend edition. I'm sure there is a problem with the tables in the database, maybe a mismatch with the ID?