My WPBakery Page Builder has suddenly lost its “Frontend Editor” option—there is no button on pages and nothing appears in WPBakery › Settings. I have not updated WordPress, themes, or any plugins recently, so the change is unexpected. I also haven’t begun any diagnostics on my own. I need you to trace and resolve the underlying cause, focusing first on possible plugin conflicts. Please isolate the culprit, apply the appropriate fix or configuration, and confirm that the Frontend Editor button is visible and fully functional again on all post types. Acceptance will be straightforward: once I can open any page with the restored Frontend Editor and save changes without errors, the job is complete.