WpBakery mobile preview incorrect/mobile view missing elements

Hi there

So my website was working perfectly fine until couple of days back (maybe even longer, idk, cuz my customer pointed the issue out for me).

Some of the elements are missing from mobile view (texts, icons), meanwhile the desktop view is exactly as it should.

When I go in the mobile preview mode in WPbakery, everything is alright, but in real mobile view half of the stuff is missing!

How can I fix it?

Thank you in advance,