Wanted to change the posters for this entry, but when I look for it on TMDB, it doesn't appear to exist?

Any suggestions? I do notice that the main Twin Peaks page has all 3 seasons listed. So, my guess is...the original page for The Return(season 3) was deleted in favor of combining that season under the main page for _Twin Peaks_so that all of the seasons would be there and now that's why the (what I'm assuming is) first page created for it now leads to a page with an error?

I'm just trying to change the background and poster for The Return on my letterboxd lists lol