I have just installed 2 new Boosters (Powerline PG-9072/3LG-VM) provided by VM to fix a Network connection issue between my main V6 box and the hub which are in different rooms. They work fine and the connection issue has been fixed. When I try to reconnect a third existing booster (Powerline 1000) it synchronises OK and when powered up connects satisfactorily to the network. However it drops the connection after 30 seconds or so. Is there a compatibility issue?