HELP! Weird overlay on my WHOLE website, probably after Astra Theme update!

I had this issue for a couple of days,

When posting on the general forum, i was informed to do a health check,

I disabled all plugins and installed a default theme, the issue was resolved, until i put the Astra theme back on.

My temporary fix is to use a different theme, but i would prefer to keep using the Astra theme because my whole site is built on it!

Please, i need some SERIOUS help!

And since Astra is the reason the issue came up in the first place, i’d like you to come up with a fix.

Kind regards,

Rogier

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