Google bot optimizations

I’m trying to increase the ranking of my website on google. I tried to use some seo tools to increase the quality of the like ryte.com. The tools say that they are not able to index my main page. In the first place I thought that they are not able to render it but there is a screenshot of the main page shown.
When I search the page in google and click “show in cache” a blank page is shown with one element rendered. I also use prerender.io but I’m not sure if google is stil doing this _escape_fragment requests.
So, I’m not sure if everything is parsed correctly or not. Anyone else who run into such problems? How do you handle it?