Database not scanning all folder ands Sub folders

If anyone could help with the database all .wavs ? its odd as it works on most folder on my ext drive but not all .

they Orange , but if I run “Quick rescan disk” on the orange folder, it turns white, but still no wavs.

I’ve read a lot of threads and there is comments on certain key strokes in the file name. But I don’t see them in my files.