1. Kindly go to the “Video Gallery => Settings => General (tab) => Videos Layout (submenu)” page from your WordPress Admin Dashboard.
2. Find the “Show / Hide (Thumbnails)” setting, uncheck the “Date Added” and the “Author Name” options, and save the changes.
3. Then, click on the “Single Video Page” submenu from the same settings page, find the “Show / Hide” setting, uncheck the “Date Added” and the “Author Name” options, and save the changes.
4. That’s it.
Hope this solved your issue!
In case the issue remains, then it must be coming from your theme. Kindly get me your site address to check this directly and send you a CSS code fix accordingly.