Partially working

Hello. I have your plugin installed to remove the custom post type slug from my URLs. But running into an issue where it’s only working on a couple of custom posts and not the others. I have set up the custom post type “Webinars”. I have 5 posts set up, but the plugin only seems to be working for 2 of them. The other 3 still have “/webinars/” in the URL. I can’t figure out what I’m doing wrong. Ideas? I’ll have to build these all out as pages if I can’t get this working. Thanks.