If a property is not showing on Rightmove, Zoopla (or any other portal) or is not showing correctly the Portals tab of the property will tell you why.  There is also a QuickLink that will help you identify the properties that are failing to appear on the Portals.  (See end of FAQ).  

On the Portals Tab you will see the Portals you feed to and if any of them have failed, it will say "Failed".  Hovering over the wording will give you an explanation why it has failed.  

In this example the Town on the property address is missing.  

Add the town (or whatever is missing) to the property and Save.  You're property will be displaying correctly in a few minutes.  With the other portals it will be overnight.  

The QuickLink can be added either to the Properties Dashboard (which will then appear on the Properties QuickLink pod on your Homepage, Properties Drop Down or the Action Menu of the Properties Grid), or it can be added to your Right Hand Tool Bar.  

From the Right Hand Tool Bar click the "Edit" button and scroll down to the Properties section.  

At the bottom of the Properties section you will find the three QuickLinks (My, Office and Group).