Page Builder

I have Avada theme, my designer used siteorigin page builder included with the theme on our site but i find its buggy i cannot see the content on visual tab but the text and text editor tabs were fine.

i had put an exception the first time this issue came up for our website and this solved the problem but the second time it did not but was still in chrome and firefox. but yet internet explorer did not have this issue, therefore i am thinking this is buggy with chrome

I thought avada/fusion core or whatever it may be called had a page builder built in if so where do i find it and can i simply change from siteorigin to this avada one.

Yes i am new to wordpress for website, so dont fully understand the implications and inner workings of this technology!