just now, I accidentally installed a theme in my homepage using appointment.
I got panicked and re-install appointment instantly. Then it seemed a bit different from previous one. Only one part, which is footer widget contents come to the top.
So I replaced them from top to original place, which is footer part.
Then it seems ok now, but i remember the other day, I asked @Akhelish to customize my child theme.
So I wonder if this accident made any trouble to his child theme.
Please let me know how to make sure everything is ok or, there's something I have to check.