I will install the Feature on the site where I created it without enabling it and see if it can be administered again in the UI.

It is for a personal blog.

Thanks, max-width together with margin:0, auto fixed that issue

It works fine on mobile phones as the screens are small, but on desktops the video expands to fill the whole width. Is there a way to set the maximum size of the video so that it doesn't become too big on desktops or laptops? The video gets too grainy when viewed in a large size.

I have correct the link for the Video filter module. I don't think it has the option for setting the width of the iframe. Do some other video embedding modules have that option?

Using the frontpage view worked. For some reason the settings used on the Site Information page do not work properly