Images displaying third-party ownership or branding not deleted - Gunsmoke

According to the image guide (https://help.imdb.com/article/contribution/images-videos/image-guidelines/G27LPBQZA7EAZGJW?ref_=helpms_helpart_inline#) "Images displaying third-party ownership or branding, such as watermarks." are not allowed.* For that reason, I tried to delete several photos, such as this one: https://www.imdb.com/title/tt0047736/mediaviewer/rm985277696/ but my contributions were declined. Was this in error or does IMDb have a different idea of third-party ownership and/or branding than I do? These are the submission numbers: #250830-175831-077902 #250830-175841-242902 #250830-175850-701802 #250830-175900-357602 #250830-175908-419202 #250830-175917-516602 #250830-175925-077402 #250830-175935-046102 #250830-175943-299402 #250830-175952-121402 #250830-180001-462602 #250830-180009-045002 #250830-180017-494502 * I know the guide also states that "Watermarks of the title's creators, such as the production company or TV channel, are acceptable", however that is not the case in my contributions. Starz started airing in 1994, while the photos are for Gunsmokw, a 50's-70's series, so Starz is clearly not one of the title's creators.