I’m still not sure what you’re describing here, or why upgrading your plan would change anything.
Have you looked at the Members tab under site settings?
Here you invite people with either edit & publish or only edit permissions, and you can change them at any time.
In the editor, those with the publish permission get this view-
While those you have denied it to get this;
If you’re not seeing that, I’d contact support to find out more.