So, not yours, then. Gallery title in current form implies that you are the artist, which is clearly not the case. I suggest you to come with a new title to avoid misunderstandings.
Also, since this is a Western imageset:
1. Western imagesets go to "Western" category;
2. https://ehwiki.org/wiki/Making_Galleries#Updating More specifically "To prevent front page abuse galleries will be locked if they are updated more than 2 times per 30 days" part. As an imageset that is not dedicated to a specific artist, is not a result of translation project, and so on - this does not fall under any exceptions.