WYSIWYG Editor not displaying correctly in backend!

Hi people,

I've just done a clean install of WP, added Elementor/Pro, Meta Box and Meta Box AIO, I've been getting used to it, reading the documentation and watching a few videos.

I've created my first Custom Post Type, added Custom Fields and Custom Taxonomies, everything seemed to be working smothly until I tried to add my first post.

The problem is there is no editor tool bar, any text entered is white and if I click 'Text' I see the appropriate tool bar but when click back to 'Visual', the editor box disappears, not the labels, just the text entry box.

I've done this with the MB builder, so haven't touched or written any code.

Any ideas?

Thanks.