We’ve responded to your help desk ticket. Thanks for posting there!
It would be helpful if you could please post the solution here as I’m experiencing similar behavior. Thanks
They discovered that something on their site, not related to Formidable, had interfered with all posts, pages, and form actions on their site.
In the past, we have only seen this issue caused by other plugins modifying posts on your site. A form action is a custom post type so if another plugin modifies post data, such as the menu_order of a post, it can break your form actions.
@shaighmw, I would recommend creating a new ticket in our help desk for assistance:
https://formidableforms.com/help-desk/
If you could include information about what changes were made on your site that may have led to this problem and what plugins you have on your site, that would be helpful.