uSync Publisher

Questions
1

I am considering if possible to use uSync publisher to publish the same content on different instances of umbraco. I am using uSync publisher (8.11.4) trial version. I try to illustrate which steps I followed:

  1. I install usync.publisher
  2. public on localhost on two different ports two instances of the site (they do not share the same database)
  3. on the target instance (to which I intend to push) I enable incoming and copy the url
    4 on the source instance I enable incoming and when I click on Development the window that allows you to create AppId / AppKey opens. In the Development server I modify the url and point it to the target server.
    5 Copy AppId / Key from the source server to the target server inside the uSync.Publish.config file
    6 Restart IIS
    6 From the source server I click on the development server and try to Check Access but it always replies “The server cannot be reached. It may be turned off or the url may be invalid?”
    What am I doing wrong?
    Any help is appreciated
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/107454-usync-publisher