Hi @chronwin
It seems the style and script files are not loaded on the backend. Please keep in mind that the correct hooks are acf/settings/path
and acf/settings/dir
. So, your code should be like this:
add_filter('acf/settings/path', 'my_acf_settings_path');
And:
add_filter('acf/settings/dir', 'my_acf_settings_dir');
I hope this helps 🙂