Hi Sara! I’m glad you found it helpful.
I think if the “This is how a visitor to your website would have seen the page:” is still blank, then the google bot isn’t able to crawl and index your page correctly.
In my case, it was blank because of uncaught JS errors, due to lack of polyfills, but it could be something else in your case.
Are you using any features that don’t have broad browser support?