Unfortunately, that is exactly what caused the problem. I updated to the latest version and the headers got screwed up. After that I updated WP, PHP to version 7.1 and then back to 7.0 because the former broke the whole thing up. I also increased the memory in wp-config. I have been trying to fix this for most of the afternoon and none of the suggestions that I tried worked. Then I rolled everything back to the steate it was yesterday but the issue persisted. Which brings me here. Feel free to update the theme and WP and let me know if I can help with anything you don’t have access to.