luminar 2018 plugin not properly working in aurora hdr 2019 (windows version)

When I want to use the luminar 2018 plugin in aurora hdr 2019 (windows versions) on a raw file (cr2) the picture loads itself as a .tiff file in luminar, but when I want to go back to aurora by clicking on "Apply" nothing happens. I return to Aurora without changes made bij Luminar. The luminar layer which should be there is not visible. Is the plugin working?