YouTube Embed Stopped Working On Two Videos

I’ve been trying to get Spanish subtitles to work on this site: , it didn’t work until I changed the YouTube Embed to edit as html.
I added the code yt:cc=on, not at the end of the url, but in the figure tag, it still didn’t work until I changed YouTu.be to the normal YouTube.com.

It worked on this page: [ redundant link removed ]

There are more videos I started doing the same thing to, but then this video: https://www.youtube.com/watch?v=YYOmwkMHPFY stopped working no matter what I did.

• I tried using the YouTu.be url
• I reinstalled WordPress 5.8
• I tried to edit in html
• The Embed button doesn’t do anything
• I hit the Try Again button and nothing
• I tried several plugins, all failed
• I even tried it on a different site with the url’s listed here, and the same thing happed

This started with one video and the previous video that I had done successfully, then started doing the same thing.

Here is the html for the video:

<figure class="wp-block-embed is-provider-youtube wp-block-embed-youtube yt:cc=on"><div class="wp-block-embed__wrapper">
https://youtu.be/YYOmwkMHPFY
</div></figure>

• This topic was modified 3 years, 8 months ago by Steven Stern (sterndata).
• This topic was modified 3 years, 8 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

The page I need help with: [log in to see the link]