You may disagree with my solution but it has definitely worked. Obviously you need to select the correct connection type for the user based on adsl or fibre. A number of people on other forums have had problems when using both router and homeplug wifi by not being able to see devices connected to the router. I had a repeatable problem. If I connected via the router wifi I couldn't see devices, if I connected via the home plug wifi I could. The problem no longer occurs whatever wifi I connect to.