homepage slider not working anymore

Hi WordPress Forum!

I have created a website for a friend and it has been running great for the past year. Now all of a sudden the slider on the homepage isn’t working.

It’s displaying one image and linking to one post, but it doesn’t show the rest of the items that should appear there. When I click the next/previous links on the slider, it adds /# after the homepage URL. The slider is also set to autoplay, and that’s not happening either.

The slider is tag-based, so all posts that I want to appear on the homepage are tagged with “homepage.”

I purchased this theme from WooThemes, but unfortunately I no longer have an account and thus I don’t think they’ll help me with this problem.

If anyone has any ideas, I would really appreciate your help! Thank you!

Here’s a link to the website: https://www.madelmont.com