I have had 2 he washers, they both got horrid musty smells and i bought the really expensive “he washer cleaner”. then, a friend turned me onto homemade laundry soap. violla!!!
no smell, no hint of musty smell ever again. so i would recommend using homemade laundry soap, not only is it cheaper, but clothes smell better and no more smell (plus added savings of not buying that cleaner!)