The Tag selection buttons do not function

I am trying to get News Wall Pro to work. I've input several articles in one category but with two different tags. These tags are not nested.

The article is being filled in by embedding the module in the location I want it in an article.

When I try to select either Companions or Riding Projects buttons (or pull down), it is not working. The "Load More" link is also not working.

Can you please let me know if I'm doing something wrong, and perhaps fix it. If you do fix it, please explain how you fixed it as I will be porting this to a live site later and may need to replicate your fix.

Another issue is that I'm trying to display four items across, but the page is only showing three.

Thank you for your help.