When I click on the button in the classic editor, the Blue BillyWig modal does not open. I get a critical error in the inspector. In logs there is a fatal error:
PHP Fatal error: Uncaught Error: Class “Helper” not found in /shared/httpd/ewmagazine/public/app/plugins/blue-billywig/admin/partials/modal.php:63

If in modal.php I “use BlueBillywigPlugin\Admin\Helper;” instead, the fatal error is gone. The modal is now visible again and we can place the videos in the editor.

Could the developer of the WordPress plugin adjust this? Or is there another method?

Is there also a widget for the block editor?