How to change the name from “Sermons” to something else like “Messages”
The default slug the plugin uses is “Sermons” if you wish to change this to something else it is best to use a single word as an alternative.
You can set the slug for the plugin on the Hub Settings tab. The first field “Archive Permalink Title”. Change the title and then SAVE your settings. Once saved you will need to update the WordPress permalinks.
Go to the WP Setting > Permalinks Settings Page and SAVE the permalinks again.