Images displaying third-party ownership or branding not deleted - Our Miss Brooks #2

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 photos from Our Miss Brooks, such as this one: https://www.imdb.com/title/tt0044287/mediaviewer/rm782572033/ 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: #250721-221717-339602 #250721-221734-170202 #250721-221742-561802 #250721-221750-261002 #250721-221759-278002 #250721-221807-585002 #250721-221815-923302 #250721-221823-810702 #250721-221833-462902 #250721-221841-302102 #250721-221849-245002 #250721-221856-768502 #250721-221905-673202 *all pictures had a watermark from Decades, a network that started in 2015 while Our Miss Brooks is a 1950's show, a fact I pointed out in each and every contribution. (based on the first thread on this exact same issue (see https://community-imdb.sprinklr.com/conversations/data-issues-policy-discussions/images-displaying-thirdparty-ownership-or-branding-not-deleted-our-miss-brooks/687cd6cd48216c184064137b), I would've hoped that the above mentioned submissions wouldn't all have been declined...)