Some elements of front page not appearing

Hiya, some parts of my website don’t load for some reason.

For example,

Plugins include:

  • All in one SEO
    *All in one wp migration
    *contact form 7
    *google analytics for Wordpress by monsterinsights
    *illdy companion
    *litespeed cache
    *optin monster
    *siteorgin widgets bundle
    *smart slider 3
    *wp super cache
    *wp user profile avatar
    *wp forms lite

Custom css was applied for the title (i.e. “Serving the Agincourt…”) and the about us section only. Wordpress version 5.7.2 and PHP version 7.4.

Is it any way to fix this? Appreciate it!