I’ve encountered another error.
If i use the slug pr-and-social-media, the plugin will look for ‘pr’ ‘and’ ‘social’ ‘media’, and if it finds any of them it’ll add them to a category group.
Its using ‘-’ as a divider, which could be a feature i guess if you wanted to allow sites to have subcategory groups.
I’m just removing all hyphens from all my category slugs to fix it.