custom css not working

I’m having all sorts of errors with header images not changing and custom css (made in avada or child theme) not taking any effect.? I’m on a fresh install of Avada (5.6.2) on WordPress and all sorts of stuff is already going wrong in making small changes. I’m hosted on wpengine.

How to fix this? Is this a caching issue or server or something else?

Hi there

Vayav, we are supporting only our products, if you have problems with an Avada please contact their support