Upfront stuck rendering when trying to edit


I am clicking on a page to edit in upfront builder and it just stays stuck rendering at 30%, I have had a look through the support forums and tried a couple of things I saw there (added google api key, adding a line to config file) but nothing is fixing it. I have only installed wordpress, the wpmu dashboard and then using the luke and sara template. Any ideas?

I have granted support access in the dashboard.