I take it you can still use these with HH5 and YouView? While waiting for the box to arrive I dusted them off got them set into the mains plugs all lights are go but my other devices line Appke TV seem not to work and I wonder what I am doing wrong, plugged Ethernet into the Apple TV to check.
Master and slave can be any way round Stuart, it makes no difference. They worked fine when I got Infinity at first. That was with the old Silver box and HH5. I presume you've done restarts of everything?