I noticed that on the documentation page at https://www.uua.org/communications/websites/wordpress-theme/documentation/pages/homepage

in the section on "To choose a carousel using the MetaSlider plugin" there is a link to:

https://www.metaslider.com/general/ which goes to "Page Not Found".

I believe that should be changed to https://www.metaslider.com/docs/getting-started/ (although that doesn't quite cover everything you want...)