Images displaying third-party ownership or branding not deleted - Cade's Country

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 this photo from Cade's Country: https://www.imdb.com/title/tt0066635/mediaviewer/rm1339126016/ 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 two submissions numbers: #250727-214005-382402 #250717-144955-936002 *all pictures had a watermark from TV Land, a network that started in 1996 while Cade's Country is a 1970's show, a fact I pointed out in both contributions.