Hello,
I found that you have errro in the console even with the default theme https://prnt.sc/1xa7n9m and also Cloudflare settings are empty and displays errors even with the default theme https://prnt.sc/1xa7jup
So, I suppose that this could be the reason of the issue. Please, solve this error with the default WordPress and then reply back and we’ll take a look at the WPBakery issue.
Regards