Theme issue- Black empty bloc hiding all the header on all pages of my site

The link provided is an example of a page with the problem.
I was writing blog posts a few days ago, and I realized while reading that a big empty bloc appeared on all pages of my website and hid everything. It is impossible to read on the desktop.
I tried all settings in the customizer: minimal, transparent, everything, nothing worked;
– deactivated plugins nothing worked.
– At first I thought it was just on my end.
– I contacted Bluehost, and they told me they saw it as well. and that the problem was with the theme.
– They tried themselves managing the settings, they could not and they actually messed up my header background font.
– Now when I open my customizer, I don’t even see the option Header anymore.

Can you please help me?
Example of page: https://themmsexperience.com/18-entrepreneurship-articles-must-read-2020/

• This topic was modified 5 years, 1 month ago by berenger92.

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