@Bimtronic use my backup/restore scripts yo save your MagicMirror setup https://github.com/sdetweil/MagicMirror-backup-restore then you can rename/delete the MagicMirror folder and use my install script see https://github.com/sdetweil/MagicMirror_scripts and then use restore to put the MagicMirror configuration back

@Bimtronic Try MMM-CalendarExt3 instead of MMM-CalendarExt. MMM-CalendarExt is no longer maintained.