The Fusion Builder has all of a sudden disappeared from my pages.

"The Fusion Builder has all of a sudden disappeared from my pages. I have checked settings and also ensured that “Fusion Builder Auto Activation” is switched ON. When going to a page to edit I can only see boxes with text and code. At the bottom of the page, I do see ‘Fusion Page Options’ but no sign of the actual builder to drag and drop elements.

Any ideas what I can do to resolve this issue would be appreciated."

Hi,
You should contact to the plugin developer regarding it. Please visit https://theme-fusion.com/support/submit-a-ticket/
Regards