How many days/months have you been editing there?
1 year, 5 months.
On the Special Pages → Special:ListAdmins when was the last time an admin edited, and who was it?
June 1, 2015.
Any other information:
Unofficial response: (Please wait for an official response by a staff member)
Hey. Right now, there appears a few other contributors/admins at this wiki. If they continue to contribute, according to the adoption guidelines, it is required that the adopting user make a blog/forum post/announcement of some sort explaining their intentions to adopt on an active wiki, so other users on the wiki can give their input, and comment on the leadership change. If you have already made one, please link it here, and if not, you should create one, then link it. If there is a consensus amongst the users for you to receive the rights, then you'll be eligible to adopt. Joey(talk)
Here is the blog required. All active users agree with my request.