Titles don't disappear in Event Manager Theme

Hi
I installed the plugin on a Event Manager Theme installation to remove the titles on all inner pages. (website is https://www.smart-change-management-camp.com) Unfortunately, neither the general options in the Theme settings, or individual “hide title” on the schedule and speaker page hide the title.

Thanks for an idea how to solve this issue.

https://www.ads-software.com/extend/plugins/genesis-title-toggle/