I already had this issue too. I could not select anything.
Then I just have to open the disc again, but without menus. Then it will directly play the movie, so you miss the menu. But you can then select the audio language and select or disable subs from the menu of VLC, the bar at the top.
You then miss the menu and the ability to select stuff like deletet scenes, but you can do that by going into the folder structure and opening the video files. They might be merged together, so you have to search for the right timestamp, but then you can watch the other things as well.
If you use a program like DVDShrink (not 4, 3.1 is the last proper version, 4 is a fake or another company), MakeMKV, MKVToolNix etc you can also try to extract the videos, removing the languages you don't need and sometimes (not always) you end up for seperate files for the different videos.
I haven't used CloneDVD until now, maybe this will work as well. But I once took a look and it seemed that it cannot seperate the thing I was looking for, so I ditched it (split by chapters).