When I looked again at the pictures (attachments) I realised that it could be userrights on one of the database connections because near the buttons there was also no default data.

I changed some rights for the user and now its working
Immediately there was another problem with the amount of records in shown in the filter but this was caused by a default setting in te register. For performance reasons, the maximum number of values that are returned for a List of Values (LOV) in Crystal
Reports is set to 1,000.
Problems Solved!