How to make the slider work?

Question

WordPress

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The template architecture demo.goodlayers.com/?theme=architecture works in the demo site.
I stopped working. As I understand it, the topic itself was updated without demand. There are all pictures (when I change their places, the first picture changes, the rest do not scroll) in the theme settings, a custom slider is enabled. But on the main page the pictures are not displayed. And how can I turn off auto-update of the topic, because even a rollback did not help solve the problems. Thank you.
And some other nonsense happens, I change in css, color, time passes and everything becomes the default

Answer 1

Update WP, you have a lot of errors in the console about jquery not found

Answer 2

Your jquery from the WP distribution has disappeared somewhere on the server:
Download clean WordPress and transfer the wp-includes/js folder from it to your site, replacing the files.