Title not showing

The plugin is running great, except the title for the main video as well as the titles of the thumbnails aren’t being displayed.
On the settings page, I only have two options: height & text color. I’ve tried adjusting it, but nothing changes.
I don’t really mind there not being a title for the video currently playing – I actually rather there isn’t. But I’d like the titles for the thumbnails, at least on mouse hover.
Is there a way to do this?

https://www.ads-software.com/plugins/youtube-playlist-player/