Hi @motyla
I’m not 100% I understand: “I inserted wp download manager packages into the post type edit page:”
Is a ‘package’ a custom post type?
You then say “ACF works well with post types and posts and there’s no hassle with them. ” so why is this issue only with “package”?
Also, how do you “changing the name of the package”
Perhaps there is some cache issue going on with the post?