When I am streaming from itv hub it plays the first section of the programme and then the first set of adverts but then stops and says I am using adblock software. I am on windows 10 and use a DNS vpn, I have adblock and ghostery add-ons installed but these are disabled on itv-hub. I have exactly the same set-up on google chrome and it works perfectly why not on firefox. I also had problems recently downloading programs from bbc i-player but I have read in your questions section that this is now fixed.