Category pages showing posts from other categories

Here is an example: https://brainxchange.events/enfold-staging/category/wearable-technology-by-industry/aec/

This page is showing a bunch of posts and I only have one post categorized as “aec” which is this one: https://brainxchange.events/enfold-staging/wearable-technology-industry-series-construction/

I hired someone on codeable to make the category pages look like masonry style and I think he screwed up and now I can’t reach him for several weeks. Any help would be appreciated.