Hello,
Thanks for the feedback. Have you checked the “Tools > Post Types” menu? This is where the module is located.
The show_admin
setting should be used in special cases where you decided to hide ACF menu to clients. If you see the ACF menu, then you should see Tools > Post Types menu. You can also check that you have the correct role/permission. By default ACF & ACF Extended require manage_options
permission.
Otherwise you may have a compatibility problem, or a custom code somewhere which disable it. To make sure you should try to use a fresh WP install + ACF Pro + ACF Extended.
Hope it helps!
Regards.