Can't Delete Trailers

Hi, I can't seem to delete trailers or edit their descriptions using the scorecard. My film's name has now been changed to But She's Your Mom and so I uploaded a corresponding trailer; can somebody on the imdb team please remove the previous trailer?

Also, I wanted to edit the caption to make But She's Your Mom in all caps, and then "trailer" just capitalized first letter, so that it would look like this BUT SHE'S YOUR MOM Trailer.

 https://www.imdb.com/title/tt22005346

Thank you in advance, 
Breindel