If you vandalize then it's pretty obvious thst your edit gets reverted and you get in trouble (and even blocked).
There's a multiple upload within the editor itself, which is called "Mass upload", that I've marked with a red circle.
But for more technical support, you can also contact Fandom Staff about it.
As what Ninja Of War said, you should contact local admin first, and if they are inactive, contact Fandom Staff. When reporting a user, always post links (not screenshots) to the post where they are sending death threats.
I like that it got changed back to say "Administrator" (or in Legacy's case, Admin) instead of "Sysop". I'm guessing the change was due to the "Sysop" label was a bit confusing for some users?
Contact Fandom staff and be sure to include links (not screenshots) where they are threatening people. Also please do not mention them here, as this will only encourage them to continue (and possibly target other users).
I think your account needs to be at least 4 days old in order to post on the Animal Crossing Wiki.
Also the admins might check the user creation log for finding sockpuppets, as in this case they found out that your other account is Ms. Minah, that has similar name, same avatar and mentions the username on your other account in your bio.
You should contact the Admin who blocked you on their message wall here on Community Central to appeal the block rather than creating more accounts.
You only created this account 1 day ago. On some wikis, such as Adopt Me! Wiki, your account needs to be at least 4 days old in order to post comments.
If a user is sending death threats to someone, contact Fandom Staff, be sure to send links (not screenshots) where the user is sending them.
Unfortunately your wiki might be closed for being a duplicate of the official one. As you mentioned above, you only created the wiki because of their rules, which is one of the bad reasons to create a new wiki of the existing topics, which are "I don’t like the people on the existing community" and possibly "The existing wiki is bad".
Yes, they changed it yesterday. Kirkburn made a post about it.
Your account needs to be at least 4 days in order to post on the Adopt Me! Wiki. You only created your accound 2 days ago, so just need to wait 2 more days to be able to post on the wiki.
If you want to create a sandbox on a wiki, you just need to create a subpage for your userpage, as what I did on the Love Live! Wiki. If you want to create one personal one on the Love Live! Wiki, you just need to create this page, since it's your personal sandbox you can add anything to it, as long it's follows the wiki's and Fandom's rules.
It means that the user is either a Fandom Staff, Wiki Representative or Wiki Specialist.