Hi there,
the ‘Theme Options’ are not available when hovering the ‘X’ in the WordPress backend. When we try to open them via ‘Design’ > ‘Customizer’ > ‘Customize X in Theme Options’ the page is loading but the area on the left stays empty.
We already tried changing the theme (X and Cornerstone are already updated to the latest version), installing and activating a child theme and deactivating all plugins. The problem is not browser specific (tested in Firefox and Chrome).
Please have a look at the backend (see Secure Note).
Best regards