First of all, thank you for your reply. I reported the problem to elementor. They are interested.

I placed a woodmart popup button next to the same (cinema) button. It’s working. But I can’t remove the white frame behind the video. Where is the mistake? Would you please look?

Also, how can I reload the “additional pages” under Dummy content? Do I need to reinstall the whole site?

Thank you again for your interest. I am waiting for your reply.