Recently had a client who had full access to WordPress, but couldn’t access a couple of forms. Clicking on the edit post link launched a modal stating the Form was locked and in use by “User”, trying to request access provided no results. Next I logged the user out of the CMS, no luck. Thanks to this blog post, just deactivating Gravity Forms and Reactivating the plugin solved my issue. Turns out there is a transient cache, that doesn’t get cleared.