Hey @Lutz_Geissler,
Are you saying here that you’re not able to find your Roon database location, in order to update the folder name? Or, are you saying that you’ve done this just now, and refreshing your database did not help?
If possible, can you provide more detail into your step-by-step process? With your core being on a MacBook pro, are you able to open roon and navigate around the app itself?
When you’ve deleted Roon in the past, did you also remove all Roon folders on your MacBook as well as the app icon itself? There is more you’ll need to do in order to fully uninstall/remove Roon and perform a full fresh install. Here is more info on this: