I have created a new website and I have installed ACF Pro and WPML among few other plugins. I have setup few ACF groups for pages, posts, options page and a custom post type. I am working with this plugin for years and I haven't experienced an issue like this.
I've setup one ACF group for a specific page but the field were not showing on admin. I couldn't realize why is this happening, so I created a test page, setup that ACF group to show on that page but it was not working there as well. Just for a test I setup that group to a post category and those fields were showing on those posts without problems. The other ACF fields were showing on posts, custom post types and options, but not on page.
I deactivated all plugins and then I started activating them one by one so I can find out is there a problem with plugins, so I realized that when the plugin Advanced Custom Fields Multilingual was activated the fields on pages are not working, when it's deactivated they are working without problems.
I did many websites till now so this is the first time experinece like this, do you have any knowledge about issues like this happening till now?