Updating your Wordpress account to its latest 6.0 version might trigger a critical error for your landing pages published via Wordpress - Landingi plugin. Our development team is working on it. Alternatively, you can download your landing page as a .PHP file and embed it directly on your server (as per manual -> https://landingi.com/help/publishing-options-in-landingi/#embedding-to-your-own-server)