Problem with YouTube videos

This theme allows you to display YouTube videos instead of featured images, on top of article text. After Nitropack activation I have the problem with YouTube videos.
https://www.birgitwetzel.de/turkestan-an-old-and-a-new-city-in-central-asia/
As you can see, the video is not displayed in the width of the entire post.

And the second problem is on this page with authors photo and üBER MICH text
https://www.birgitwetzel.de/author/birgitwetzel/

Of course, I can exclude all these urls but it doesn’t suit me.

• This topic was modified 3 months, 2 weeks ago by Merkucio.
• This topic was modified 3 months, 2 weeks ago by Merkucio.
• This topic was modified 3 months, 2 weeks ago by Merkucio.