Album art for ipados 16.7.8

[TOxMM]

I installed the latest VLC to my ipad and using iTunes I transferred 91 music albums from my win11pro pc to the ipad. That worked great, all 91 albums were transferred. However 21 albums don't show album art. In Windows the albums art is stored in the same folder as the music but for some reason the art failed to transfer on these 21 albums. Never had this problem on my Windows PC's or my Samsung phone or tablet. Anyone one know how to get the albums art to show on these 21 albums?