The section which says The Content Here is the Topbar. You can turn it off by going to X > Launch > Options > Header > Topbar.
The Handwriting font is because you set the heading to be this font in the options:
And whenever there is no logo image fount it will show the title of the website as a heading. Go to X > Launch > Options > Header > Logo - Image and add proper image there.
There is indeed a Custom HTML Widget added to the sidebar in the page:
Maybe it is added specifically to this page as a sidebar. For more information:
Those are the options and features of the theme which is normal, I wonder if you are new to the website somehow? As these are some stuff that indeed is set and you not knowing about them makes no sense. Someone must have added those widgets and option, the theme cannot do it by itself. Are there other people working on your website and have access to the dashboard?
If yes you need to contact them and ask for details.
Meanwhile, I suggest that you check our knowledgebase as there is great information about how our theme works: