Hi, just installed Booking 2 after uninstalling Booking 1 in joomla. Somehow it took my old objects from the last Booking 1 installation (which is not bad) but everything in the Configuration window is gone, the field is completely empty.

Hello,

Uninstallation probably did not remove database tables. So you are using old database from Booking 1.x. You can try to uninstall it again and check your database, if there are old tables for Booking and remove them manually. So new installation will be clean.