Artwork & Folder names not matching

I am storing my movies etc on Google Drive and watch via AppleTV 4. Something i have noticed is some movies are picking up the incorrect artwork or title e.g. Planet of the Apes 1968 shows the artwork & name of War for the Planet of the apes. Also, although ive changed the name of the folder i’ve used on google drive it hasn’t picked up the new folder’s name. Any ideas?