It looks like Roon thinks the main performer on this album is “Various Artists” – usually this would mean something is going on in the tags, but since tags generally aren’t available in WAV files, our options here are a little more limited.
Keep in mind that when you’re editing Album Artist in Roon, this is more like editing a display setting for the album, as opposed to creating a new performer or artist in Roon. I explained this distinction in more detail here.
Can you try clicking the Identify Album button on the Album Options tab, and seeing if you’re able to find a match in our database? That will be the easiest way to get this working, as the normal fix (editing the file tags directly) won’t work here, since these are WAV files.